diff --git a/.github/actions/check/action.yml b/.github/actions/check/action.yml
index e86e157a..a1290210 100644
--- a/.github/actions/check/action.yml
+++ b/.github/actions/check/action.yml
@@ -51,4 +51,4 @@ runs:
         test_service_port: 9000
         enable_persistence_tests: true
         token: ${{ inputs.token }}
-        version: v3.0.0-alpha.2
\ No newline at end of file
+        version: v3.0.0-alpha.3
\ No newline at end of file
diff --git a/contract-tests/client_entity.rb b/contract-tests/client_entity.rb
index 11c8e121..1b6570f9 100644
--- a/contract-tests/client_entity.rb
+++ b/contract-tests/client_entity.rb
@@ -37,20 +37,13 @@ def initialize(log, config)
         data_system.initializers(initializers)
       end
 
-      sync_config = data_system_config[:synchronizers]
-      if sync_config
-        primary = sync_config[:primary]
-        secondary = sync_config[:secondary]
+      sync_configs = data_system_config[:synchronizers]
+      if sync_configs && !sync_configs.empty?
+        synchronizer_builders = sync_configs.map { |sync_config| build_synchronizer_builder(sync_config) }.compact
+        data_system.synchronizers(synchronizer_builders) unless synchronizer_builders.empty?
 
-        primary_builder = build_synchronizer_builder(primary)
-        secondary_builder = build_synchronizer_builder(secondary)
-
-        data_system.synchronizers(primary_builder, secondary_builder) if primary_builder
-
-        if primary_builder || secondary_builder
-          fallback_builder = build_fdv1_fallback_builder(primary, secondary)
-          data_system.fdv1_compatible_synchronizer(fallback_builder)
-        end
+        fallback_builder = build_fdv1_fallback_builder(sync_configs)
+        data_system.fdv1_compatible_synchronizer(fallback_builder)
       end
 
       if data_system_config[:payloadFilter]
@@ -327,17 +320,16 @@ def close
   end
 
   #
-  # Builds an FDv1 fallback polling data source builder using the first available config.
+  # Builds an FDv1 fallback polling data source builder using the first available polling config.
   #
-  # @param primary [Hash, nil] The primary synchronizer configuration
-  # @param secondary [Hash, nil] The secondary synchronizer configuration
+  # @param sync_configs [Array<Hash>] Array of synchronizer configurations
   # @return [Object] Returns the configured FDv1 fallback builder
   #
-  private def build_fdv1_fallback_builder(primary, secondary)
+  private def build_fdv1_fallback_builder(sync_configs)
     builder = LaunchDarkly::DataSystem.fdv1_fallback_ds_builder
 
     # Use the first available polling config for the fallback base_uri
-    polling_config = primary&.dig(:polling) || secondary&.dig(:polling)
+    polling_config = sync_configs.lazy.map { |c| c[:polling] }.detect { |p| p }
     if polling_config
       builder.base_uri(polling_config[:baseUri]) if polling_config[:baseUri]
       builder.poll_interval(polling_config[:pollIntervalMs] / 1_000.0) if polling_config[:pollIntervalMs]
diff --git a/lib/ldclient-rb/config.rb b/lib/ldclient-rb/config.rb
index f82860b0..aa4d1d67 100644
--- a/lib/ldclient-rb/config.rb
+++ b/lib/ldclient-rb/config.rb
@@ -703,34 +703,28 @@ def initialize(store:, context_cache_size: nil, context_cache_time: nil, status_
   class DataSystemConfig
     #
     # @param initializers [Array<#build(String, Config)>, nil] The (optional) array of builders
-    # @param primary_synchronizer [#build(String, Config), nil] The (optional) builder for primary synchronizer
-    # @param secondary_synchronizer [#build(String, Config), nil] The (optional) builder for secondary synchronizer
+    # @param synchronizers [Array<#build(String, Config)>, nil] The (optional) array of synchronizer builders
     # @param data_store_mode [Symbol] The (optional) data store mode
     # @param data_store [LaunchDarkly::Interfaces::FeatureStore, nil] The (optional) data store
     # @param fdv1_fallback_synchronizer [#build(String, Config), nil]
     #   The (optional) builder for FDv1-compatible fallback synchronizer
     #
-    def initialize(initializers: nil, primary_synchronizer: nil, secondary_synchronizer: nil,
+    def initialize(initializers: nil, synchronizers: nil,
                    data_store_mode: LaunchDarkly::Interfaces::DataSystem::DataStoreMode::READ_ONLY, data_store: nil, fdv1_fallback_synchronizer: nil)
       @initializers = initializers
-      @primary_synchronizer = primary_synchronizer
-      @secondary_synchronizer = secondary_synchronizer
+      @synchronizers = synchronizers
       @data_store_mode = data_store_mode
       @data_store = data_store
       @fdv1_fallback_synchronizer = fdv1_fallback_synchronizer
     end
 
-    # The initializers for the data system. Each builder responds to build(sdk_key, config) and returns an Initializer.
+    # The initializer builders for the data system. Each builder responds to build(sdk_key, config) and returns an Initializer.
     # @return [Array<#build(String, Config)>, nil]
     attr_reader :initializers
 
-    # The primary synchronizer builder. Responds to build(sdk_key, config) and returns a Synchronizer.
-    # @return [#build(String, Config), nil]
-    attr_reader :primary_synchronizer
-
-    # The secondary synchronizer builder. Responds to build(sdk_key, config) and returns a Synchronizer.
-    # @return [#build(String, Config), nil]
-    attr_reader :secondary_synchronizer
+    # The synchronizer builders for the data system. Each builder responds to build(sdk_key, config) and returns a Synchronizer.
+    # @return [Array<#build(String, Config)>, nil]
+    attr_reader :synchronizers
 
     # The data store mode.
     # @return [Symbol]
diff --git a/lib/ldclient-rb/data_system.rb b/lib/ldclient-rb/data_system.rb
index 2e002b63..faed96a8 100644
--- a/lib/ldclient-rb/data_system.rb
+++ b/lib/ldclient-rb/data_system.rb
@@ -18,8 +18,7 @@ module DataSystem
     class ConfigBuilder
       def initialize
         @initializers = nil
-        @primary_synchronizer = nil
-        @secondary_synchronizer = nil
+        @synchronizers = nil
         @fdv1_fallback_synchronizer = nil
         @data_store_mode = LaunchDarkly::Interfaces::DataSystem::DataStoreMode::READ_ONLY
         @data_store = nil
@@ -40,13 +39,12 @@ def initializers(initializers)
       #
       # Sets the synchronizers for the data system.
       #
-      # @param primary [#build(String, Config)] Builder that responds to build(sdk_key, config) and returns the primary Synchronizer
-      # @param secondary [#build(String, Config), nil] Builder that responds to build(sdk_key, config) and returns the secondary Synchronizer
+      # @param synchronizers [Array<#build(String, Config)>]
+      #   Array of builders that respond to build(sdk_key, config) and return a Synchronizer
       # @return [ConfigBuilder] self for chaining
       #
-      def synchronizers(primary, secondary = nil)
-        @primary_synchronizer = primary
-        @secondary_synchronizer = secondary
+      def synchronizers(synchronizers)
+        @synchronizers = synchronizers
         self
       end
 
@@ -79,17 +77,11 @@ def data_store(data_store, store_mode)
       # Builds the data system configuration.
       #
       # @return [DataSystemConfig]
-      # @raise [ArgumentError] if configuration is invalid
       #
       def build
-        if @secondary_synchronizer && @primary_synchronizer.nil?
-          raise ArgumentError, "Primary synchronizer must be set if secondary is set"
-        end
-
         DataSystemConfig.new(
           initializers: @initializers,
-          primary_synchronizer: @primary_synchronizer,
-          secondary_synchronizer: @secondary_synchronizer,
+          synchronizers: @synchronizers,
           data_store_mode: @data_store_mode,
           data_store: @data_store,
           fdv1_fallback_synchronizer: @fdv1_fallback_synchronizer
@@ -151,7 +143,7 @@ def self.default
 
       builder = ConfigBuilder.new
       builder.initializers([polling_builder])
-      builder.synchronizers(streaming_builder, polling_builder)
+      builder.synchronizers([streaming_builder, polling_builder])
       builder.fdv1_compatible_synchronizer(fallback)
 
       builder
@@ -169,7 +161,7 @@ def self.streaming
       fallback = fdv1_fallback_ds_builder
 
       builder = ConfigBuilder.new
-      builder.synchronizers(streaming_builder)
+      builder.synchronizers([streaming_builder])
       builder.fdv1_compatible_synchronizer(fallback)
 
       builder
@@ -187,7 +179,7 @@ def self.polling
       fallback = fdv1_fallback_ds_builder
 
       builder = ConfigBuilder.new
-      builder.synchronizers(polling_builder)
+      builder.synchronizers([polling_builder])
       builder.fdv1_compatible_synchronizer(fallback)
 
       builder
diff --git a/lib/ldclient-rb/impl/data_source/status_provider.rb b/lib/ldclient-rb/impl/data_source/status_provider.rb
index 087e15c0..ec55cd36 100644
--- a/lib/ldclient-rb/impl/data_source/status_provider.rb
+++ b/lib/ldclient-rb/impl/data_source/status_provider.rb
@@ -54,6 +54,11 @@ def update_status(new_state, new_error)
               new_state = LaunchDarkly::Interfaces::DataSource::Status::INITIALIZING
             end
 
+            # Special handling: You can't go back to INITIALIZING after being anything else
+            if new_state == LaunchDarkly::Interfaces::DataSource::Status::INITIALIZING && !old_status.state.nil?
+              new_state = old_status.state
+            end
+
             # No change if state is the same and no error
             return if new_state == old_status.state && new_error.nil?
 
diff --git a/lib/ldclient-rb/impl/data_store/status_provider.rb b/lib/ldclient-rb/impl/data_store/status_provider.rb
index fda0bf08..deae9ee0 100644
--- a/lib/ldclient-rb/impl/data_store/status_provider.rb
+++ b/lib/ldclient-rb/impl/data_store/status_provider.rb
@@ -10,12 +10,6 @@ module DataStore
       #
       # StatusProviderV2 is the FDv2-specific implementation of {LaunchDarkly::Interfaces::DataStore::StatusProvider}.
       #
-      # This type is not stable, and not subject to any backwards
-      # compatibility guarantees or semantic versioning. It is not suitable for production usage.
-      #
-      # Do not use it.
-      # You have been warned.
-      #
       class StatusProviderV2
         include LaunchDarkly::Interfaces::DataStore::StatusProvider
 
diff --git a/lib/ldclient-rb/impl/data_system/fdv2.rb b/lib/ldclient-rb/impl/data_system/fdv2.rb
index 5fa0631f..0194cc35 100644
--- a/lib/ldclient-rb/impl/data_system/fdv2.rb
+++ b/lib/ldclient-rb/impl/data_system/fdv2.rb
@@ -14,6 +14,30 @@
 module LaunchDarkly
   module Impl
     module DataSystem
+      #
+      # Represents the possible outcomes from consuming synchronizer results.
+      #
+      # Used by {FDv2#consume_synchronizer_results} to indicate what action the
+      # synchronizer loop should take next.
+      #
+      module SyncResult
+        # Temporarily move to the next synchronizer in the list.
+        # The current synchronizer remains available for future recovery.
+        FALLBACK = :fallback
+
+        # Return to the first synchronizer in the list.
+        # Used when recovery conditions are met on a fallback synchronizer.
+        RECOVER = :recover
+
+        # Permanently remove the current synchronizer from the list.
+        # Used for unrecoverable failures (OFF state, exceptions).
+        REMOVE = :remove
+
+        # Switch to the FDv1 protocol fallback.
+        # Replaces the synchronizer list with the FDv1 fallback synchronizer.
+        FDV1 = :fdv1
+      end
+
       # FDv2 is an implementation of the DataSystem interface that uses the Flag Delivery V2 protocol
       # for obtaining and keeping data up-to-date. Additionally, it operates with an optional persistent
       # store in read-only or read/write mode.
@@ -30,8 +54,7 @@ def initialize(sdk_key, config, data_system_config)
           @config = config
           @data_system_config = data_system_config
           @logger = config.logger
-          @primary_synchronizer_builder = data_system_config.primary_synchronizer
-          @secondary_synchronizer_builder = data_system_config.secondary_synchronizer
+          @synchronizer_builders = data_system_config.synchronizers || []
           @fdv1_fallback_synchronizer_builder = data_system_config.fdv1_fallback_synchronizer
           @disabled = @config.offline?
 
@@ -86,7 +109,7 @@ def initialize(sdk_key, config, data_system_config)
 
           # Track configuration
           @configured_with_data_sources = (@data_system_config.initializers && !@data_system_config.initializers.empty?) ||
-            !@data_system_config.primary_synchronizer.nil?
+            !@synchronizer_builders.empty?
         end
 
         # (see DataSystem#start)
@@ -246,8 +269,8 @@ def run_initializers
         # @return [void]
         #
         def run_synchronizers
-          # If no primary synchronizer configured, just set ready and return
-          if @primary_synchronizer_builder.nil?
+          # If no synchronizers configured, just set ready and return
+          if @synchronizer_builders.empty?
             @ready_event.set
             return
           end
@@ -259,79 +282,64 @@ def run_synchronizers
         end
 
         #
-        # Synchronizer loop that manages primary/secondary/fallback synchronizers.
+        # Synchronizer loop that manages synchronizers and fallbacks.
         #
         # @return [void]
         #
         def synchronizer_loop
+          # Track the current index in the synchronizer array
+          current_index = 0
+
           begin
-            while !@stop_event.set? && @primary_synchronizer_builder
-              # Try primary synchronizer
+            while !@stop_event.set? && current_index < @synchronizer_builders.length
+              synchronizer_builder = @synchronizer_builders[current_index]
+              is_primary = current_index == 0
+
               begin
                 @lock.synchronize do
-                  primary_sync = @primary_synchronizer_builder.build(@sdk_key, @config)
-                  if primary_sync.respond_to?(:set_diagnostic_accumulator) && @diagnostic_accumulator
-                    primary_sync.set_diagnostic_accumulator(@diagnostic_accumulator)
+                  sync = synchronizer_builder.build(@sdk_key, @config)
+                  if sync.respond_to?(:set_diagnostic_accumulator) && @diagnostic_accumulator
+                    sync.set_diagnostic_accumulator(@diagnostic_accumulator)
                   end
-                  @active_synchronizer = primary_sync
+                  @active_synchronizer = sync
                 end
 
-                @logger.info { "[LDClient] Primary synchronizer #{@active_synchronizer.name} is starting" }
+                @logger.info { "[LDClient] Synchronizer[#{current_index}] #{@active_synchronizer.name} is starting" }
 
-                remove_sync, fallback_v1 = consume_synchronizer_results(
-                  @active_synchronizer,
-                  method(:fallback_condition)
-                )
+                sync_result = consume_synchronizer_results(@active_synchronizer, check_recovery: !is_primary)
 
-                if remove_sync
-                  @primary_synchronizer_builder = fallback_v1 ? @fdv1_fallback_synchronizer_builder : @secondary_synchronizer_builder
-                  @secondary_synchronizer_builder = nil
+                break if @stop_event.set?
 
-                  if @primary_synchronizer_builder.nil?
-                    @logger.warn { "[LDClient] No more synchronizers available" }
-                    @data_source_status_provider.update_status(
-                      LaunchDarkly::Interfaces::DataSource::Status::OFF,
-                      @data_source_status_provider.status.last_error
-                    )
-                    break
+                case sync_result
+                when SyncResult::FDV1
+                  if @fdv1_fallback_synchronizer_builder
+                    @synchronizer_builders = [@fdv1_fallback_synchronizer_builder]
+                    current_index = 0
+                    next
                   end
+                  # No FDv1 fallback configured, treat as regular fallback
+                  current_index += 1
+                when SyncResult::RECOVER
+                  @logger.info { "[LDClient] Recovery condition met, returning to primary synchronizer" }
+                  current_index = 0
+                when SyncResult::REMOVE
+                  @logger.info { "[LDClient] Removing synchronizer from list due to permanent failure" }
+                  @synchronizer_builders.delete_at(current_index)
                 else
                   @logger.info { "[LDClient] Fallback condition met" }
+                  current_index += 1
                 end
 
-                break if @stop_event.set?
-
-                next if @secondary_synchronizer_builder.nil?
-
-                @lock.synchronize do
-                  secondary_sync = @secondary_synchronizer_builder.build(@sdk_key, @config)
-                  if secondary_sync.respond_to?(:set_diagnostic_accumulator) && @diagnostic_accumulator
-                    secondary_sync.set_diagnostic_accumulator(@diagnostic_accumulator)
-                  end
-                  @logger.info { "[LDClient] Secondary synchronizer #{secondary_sync.name} is starting" }
-                  @active_synchronizer = secondary_sync
-                end
+                current_index = 0 if current_index >= @synchronizer_builders.length
 
-                remove_sync, fallback_v1 = consume_synchronizer_results(
-                  @active_synchronizer,
-                  method(:recovery_condition)
-                )
-
-                if remove_sync
-                  @secondary_synchronizer_builder = nil
-                  @primary_synchronizer_builder = @fdv1_fallback_synchronizer_builder if fallback_v1
-
-                  if @primary_synchronizer_builder.nil?
-                    @logger.warn { "[LDClient] No more synchronizers available" }
-                    @data_source_status_provider.update_status(
-                      LaunchDarkly::Interfaces::DataSource::Status::OFF,
-                      @data_source_status_provider.status.last_error
-                    )
-                    break
-                  end
+                if @synchronizer_builders.length == 0
+                  @logger.warn { "[LDClient] No more synchronizers available" }
+                  @data_source_status_provider.update_status(
+                    LaunchDarkly::Interfaces::DataSource::Status::OFF,
+                    @data_source_status_provider.status.last_error
+                  )
+                  break
                 end
-
-                @logger.info { "[LDClient] Recovery condition met, returning to primary synchronizer" }
               rescue => e
                 @logger.error { "[LDClient] Failed to build synchronizer: #{e.message}" }
                 break
@@ -353,10 +361,10 @@ def synchronizer_loop
         # Consume results from a synchronizer until a condition is met or it fails.
         #
         # @param synchronizer [Object] The synchronizer
-        # @param condition_func [Proc] Function to check if condition is met
-        # @return [Array(Boolean, Boolean)] [should_remove_sync, fallback_to_fdv1]
+        # @param check_recovery [Boolean] Whether to check recovery condition (healthy too long)
+        # @return [Symbol] One of {SyncResult::FALLBACK}, {SyncResult::RECOVER}, {SyncResult::REMOVE}, or {SyncResult::FDV1}
         #
-        def consume_synchronizer_results(synchronizer, condition_func)
+        def consume_synchronizer_results(synchronizer, check_recovery: false)
           action_queue = Queue.new
           timer = LaunchDarkly::Impl::RepeatingTask.new(10, 10, -> { action_queue.push("check") }, @logger, "FDv2-sync-cond-timer")
 
@@ -384,13 +392,14 @@ def consume_synchronizer_results(synchronizer, condition_func)
                 if update == "check"
                   # Check condition periodically
                   current_status = @data_source_status_provider.status
-                  return [false, false] if condition_func.call(current_status)
+                  return SyncResult::RECOVER if check_recovery && recovery_condition(current_status)
+                  return SyncResult::FALLBACK if fallback_condition(current_status)
                 end
                 next
               end
 
               @logger.info { "[LDClient] Synchronizer #{synchronizer.name} update: #{update.state}" }
-              return [false, false] if @stop_event.set?
+              return SyncResult::FALLBACK if @stop_event.set?
 
               # Handle the update
               @store.apply(update.change_set, true) if update.change_set
@@ -401,26 +410,24 @@ def consume_synchronizer_results(synchronizer, condition_func)
               # Update status
               @data_source_status_provider.update_status(update.state, update.error)
 
-              # Check if we should revert to FDv1 immediately
-              return [true, true] if update.revert_to_fdv1
+              return SyncResult::FDV1 if update.revert_to_fdv1
 
-              # Check for OFF state indicating permanent failure
-              return [true, false] if update.state == LaunchDarkly::Interfaces::DataSource::Status::OFF
+              return SyncResult::REMOVE if update.state == LaunchDarkly::Interfaces::DataSource::Status::OFF
             end
           rescue => e
             @logger.error { "[LDClient] Error consuming synchronizer results: #{e.message}" }
-            return [true, false]
+            return SyncResult::REMOVE
           ensure
             synchronizer.stop
             timer.stop
             sync_reader.join(0.5) if sync_reader.alive?
           end
 
-          [true, false]
+          SyncResult::REMOVE
         end
 
         #
-        # Determine if we should fallback to secondary synchronizer.
+        # Determine if we should fallback to the next synchronizer.
         #
         # @param status [LaunchDarkly::Interfaces::DataSource::Status] Current data source status
         # @return [Boolean] true if fallback condition is met
@@ -435,20 +442,14 @@ def fallback_condition(status)
         end
 
         #
-        # Determine if we should try to recover to primary synchronizer.
+        # Determine if we should recover to the primary synchronizer.
         #
         # @param status [LaunchDarkly::Interfaces::DataSource::Status] Current data source status
-        # @return [Boolean] true if recovery condition is met
+        # @return [Boolean] true if recovery condition is met (healthy for too long)
         #
         def recovery_condition(status)
-          interrupted_at_runtime = status.state == LaunchDarkly::Interfaces::DataSource::Status::INTERRUPTED &&
-            Time.now - status.state_since > 60  # 1 minute
-          healthy_for_too_long = status.state == LaunchDarkly::Interfaces::DataSource::Status::VALID &&
+          status.state == LaunchDarkly::Interfaces::DataSource::Status::VALID &&
             Time.now - status.state_since > 300  # 5 minutes
-          cannot_initialize = status.state == LaunchDarkly::Interfaces::DataSource::Status::INITIALIZING &&
-            Time.now - status.state_since > 10  # 10 seconds
-
-          interrupted_at_runtime || healthy_for_too_long || cannot_initialize
         end
 
         #
diff --git a/lib/ldclient-rb/impl/integrations/file_data_source_v2.rb b/lib/ldclient-rb/impl/integrations/file_data_source_v2.rb
index eded0ad8..b1153992 100644
--- a/lib/ldclient-rb/impl/integrations/file_data_source_v2.rb
+++ b/lib/ldclient-rb/impl/integrations/file_data_source_v2.rb
@@ -16,12 +16,6 @@ module Integrations
       #
       # Internal implementation of both Initializer and Synchronizer protocols for file-based data.
       #
-      # This type is not stable, and not subject to any backwards
-      # compatibility guarantees or semantic versioning. It is not suitable for production usage.
-      #
-      # Do not use it.
-      # You have been warned.
-      #
       # This component reads feature flag and segment data from local files and provides them
       # via the FDv2 protocol interfaces. Each instance implements both Initializer and Synchronizer
       # protocols:
diff --git a/lib/ldclient-rb/integrations/file_data.rb b/lib/ldclient-rb/integrations/file_data.rb
index fe29f0c8..256c360a 100644
--- a/lib/ldclient-rb/integrations/file_data.rb
+++ b/lib/ldclient-rb/integrations/file_data.rb
@@ -108,11 +108,8 @@ def self.data_source(options={})
       #
       # Returns a builder for the FDv2-compatible file data source.
       #
-      # This type is not stable, and not subject to any backwards
-      # compatibility guarantees or semantic versioning. It is not suitable for production usage.
-      #
-      # Do not use it.
-      # You have been warned.
+      # This method is not stable, and not subject to any backwards compatibility guarantees or semantic versioning.
+      # It is in early access. If you want access to this feature please join the EAP. https://launchdarkly.com/docs/sdk/features/data-saving-mode
       #
       # This method returns a builder proc that can be used with the FDv2 data system
       # configuration as both an Initializer and a Synchronizer. When used as an Initializer
@@ -137,7 +134,7 @@ def self.data_source(options={})
       # @example Using as a synchronizer
       #   file_source = LaunchDarkly::Integrations::FileData.data_source_v2(paths: ['flags.json'])
       #   data_system_config = LaunchDarkly::DataSystemConfig.new(
-      #     synchronizer: file_source
+      #     synchronizers: [file_source]
       #   )
       #   config = LaunchDarkly::Config.new(data_system: data_system_config)
       #
@@ -145,7 +142,7 @@ def self.data_source(options={})
       #   file_source = LaunchDarkly::Integrations::FileData.data_source_v2(paths: ['flags.json'])
       #   data_system_config = LaunchDarkly::DataSystemConfig.new(
       #     initializers: [file_source],
-      #     synchronizer: file_source
+      #     synchronizers: [file_source]
       #   )
       #   config = LaunchDarkly::Config.new(data_system: data_system_config)
       #
diff --git a/lib/ldclient-rb/integrations/test_data_v2.rb b/lib/ldclient-rb/integrations/test_data_v2.rb
index cddd73ae..52ed6500 100644
--- a/lib/ldclient-rb/integrations/test_data_v2.rb
+++ b/lib/ldclient-rb/integrations/test_data_v2.rb
@@ -9,11 +9,8 @@ module Integrations
     # A mechanism for providing dynamically updatable feature flag state in a
     # simplified form to an SDK client in test scenarios using the FDv2 protocol.
     #
-    # This type is not stable, and not subject to any backwards
-    # compatibility guarantees or semantic versioning. It is not suitable for production usage.
-    #
-    # Do not use it.
-    # You have been warned.
+    # This class is not stable, and not subject to any backwards compatibility guarantees or semantic versioning.
+    # It is in early access. If you want access to this feature please join the EAP. https://launchdarkly.com/docs/sdk/features/data-saving-mode
     #
     # Unlike {LaunchDarkly::Integrations::FileData}, this mechanism does not use any external resources. It
     # provides only the data that the application has put into it using the {#update} method.
diff --git a/lib/ldclient-rb/interfaces/data_system.rb b/lib/ldclient-rb/interfaces/data_system.rb
index 6447dc80..92479b75 100644
--- a/lib/ldclient-rb/interfaces/data_system.rb
+++ b/lib/ldclient-rb/interfaces/data_system.rb
@@ -6,11 +6,8 @@ module DataSystem
       #
       # EventName represents the name of an event that can be sent by the server for FDv2.
       #
-      # This type is not stable, and not subject to any backwards
-      # compatibility guarantees or semantic versioning. It is not suitable for production usage.
-      #
-      # Do not use it.
-      # You have been warned.
+      # This type is not stable, and not subject to any backwards compatibility guarantees or semantic versioning.
+      # It is in early access. If you want access to this feature please join the EAP. https://launchdarkly.com/docs/sdk/features/data-saving-mode
       #
       module EventName
         # Specifies that an object should be added to the data set with upsert semantics.
@@ -38,11 +35,8 @@ module EventName
       #
       # ObjectKind represents the kind of object.
       #
-      # This type is not stable, and not subject to any backwards
-      # compatibility guarantees or semantic versioning. It is not suitable for production usage.
-      #
-      # Do not use it.
-      # You have been warned.
+      # This type is not stable, and not subject to any backwards compatibility guarantees or semantic versioning.
+      # It is in early access. If you want access to this feature please join the EAP. https://launchdarkly.com/docs/sdk/features/data-saving-mode
       #
       module ObjectKind
         # Represents a feature flag.
@@ -55,11 +49,8 @@ module ObjectKind
       #
       # ChangeType specifies if an object is being upserted or deleted.
       #
-      # This type is not stable, and not subject to any backwards
-      # compatibility guarantees or semantic versioning. It is not suitable for production usage.
-      #
-      # Do not use it.
-      # You have been warned.
+      # This type is not stable, and not subject to any backwards compatibility guarantees or semantic versioning.
+      # It is in early access. If you want access to this feature please join the EAP. https://launchdarkly.com/docs/sdk/features/data-saving-mode
       #
       module ChangeType
         # Represents an object being upserted.
@@ -72,11 +63,8 @@ module ChangeType
       #
       # IntentCode represents the various intents that can be sent by the server.
       #
-      # This type is not stable, and not subject to any backwards
-      # compatibility guarantees or semantic versioning. It is not suitable for production usage.
-      #
-      # Do not use it.
-      # You have been warned.
+      # This type is not stable, and not subject to any backwards compatibility guarantees or semantic versioning.
+      # It is in early access. If you want access to this feature please join the EAP. https://launchdarkly.com/docs/sdk/features/data-saving-mode
       #
       module IntentCode
         # The server intends to send a full data set.
@@ -92,11 +80,8 @@ module IntentCode
       #
       # DataStoreMode represents the mode of operation of a Data Store in FDV2 mode.
       #
-      # This type is not stable, and not subject to any backwards
-      # compatibility guarantees or semantic versioning. It is not suitable for production usage.
-      #
-      # Do not use it.
-      # You have been warned.
+      # This type is not stable, and not subject to any backwards compatibility guarantees or semantic versioning.
+      # It is in early access. If you want access to this feature please join the EAP. https://launchdarkly.com/docs/sdk/features/data-saving-mode
       #
       module DataStoreMode
         # Indicates that the data store is read-only. Data will never be written back to the store by the SDK.
@@ -110,11 +95,8 @@ module DataStoreMode
       #
       # Selector represents a particular snapshot of data.
       #
-      # This type is not stable, and not subject to any backwards
-      # compatibility guarantees or semantic versioning. It is not suitable for production usage.
-      #
-      # Do not use it.
-      # You have been warned.
+      # This type is not stable, and not subject to any backwards compatibility guarantees or semantic versioning.
+      # It is in early access. If you want access to this feature please join the EAP. https://launchdarkly.com/docs/sdk/features/data-saving-mode
       #
       class Selector
         # @return [String] The state
@@ -214,11 +196,8 @@ def hash
       #
       # Change represents a change to a piece of data, such as an update or deletion.
       #
-      # This type is not stable, and not subject to any backwards
-      # compatibility guarantees or semantic versioning. It is not suitable for production usage.
-      #
-      # Do not use it.
-      # You have been warned.
+      # This type is not stable, and not subject to any backwards compatibility guarantees or semantic versioning.
+      # It is in early access. If you want access to this feature please join the EAP. https://launchdarkly.com/docs/sdk/features/data-saving-mode
       #
       class Change
         # @return [String] The action ({ChangeType})
@@ -255,11 +234,8 @@ def initialize(action:, kind:, key:, version:, object: nil)
       #
       # ChangeSet represents a list of changes to be applied.
       #
-      # This type is not stable, and not subject to any backwards
-      # compatibility guarantees or semantic versioning. It is not suitable for production usage.
-      #
-      # Do not use it.
-      # You have been warned.
+      # This type is not stable, and not subject to any backwards compatibility guarantees or semantic versioning.
+      # It is in early access. If you want access to this feature please join the EAP. https://launchdarkly.com/docs/sdk/features/data-saving-mode
       #
       class ChangeSet
         # @return [String] The intent code ({IntentCode})
@@ -286,11 +262,8 @@ def initialize(intent_code:, changes:, selector:)
       #
       # Basis represents the initial payload of data that a data source can provide.
       #
-      # This type is not stable, and not subject to any backwards
-      # compatibility guarantees or semantic versioning. It is not suitable for production usage.
-      #
-      # Do not use it.
-      # You have been warned.
+      # This type is not stable, and not subject to any backwards compatibility guarantees or semantic versioning.
+      # It is in early access. If you want access to this feature please join the EAP. https://launchdarkly.com/docs/sdk/features/data-saving-mode
       #
       class Basis
         # @return [ChangeSet] The change set
@@ -317,11 +290,8 @@ def initialize(change_set:, persist:, environment_id: nil)
       #
       # Payload represents a payload delivered in a streaming response.
       #
-      # This type is not stable, and not subject to any backwards
-      # compatibility guarantees or semantic versioning. It is not suitable for production usage.
-      #
-      # Do not use it.
-      # You have been warned.
+      # This type is not stable, and not subject to any backwards compatibility guarantees or semantic versioning.
+      # It is in early access. If you want access to this feature please join the EAP. https://launchdarkly.com/docs/sdk/features/data-saving-mode
       #
       class Payload
         # @return [String] The payload ID
@@ -387,11 +357,8 @@ def self.from_h(data)
       #
       # ServerIntent represents the type of change associated with the payload.
       #
-      # This type is not stable, and not subject to any backwards
-      # compatibility guarantees or semantic versioning. It is not suitable for production usage.
-      #
-      # Do not use it.
-      # You have been warned.
+      # This type is not stable, and not subject to any backwards compatibility guarantees or semantic versioning.
+      # It is in early access. If you want access to this feature please join the EAP. https://launchdarkly.com/docs/sdk/features/data-saving-mode
       #
       class ServerIntent
         # @return [Payload] The payload
@@ -438,11 +405,8 @@ def self.from_h(data)
       #
       # ChangeSetBuilder is a helper for constructing a ChangeSet.
       #
-      # This type is not stable, and not subject to any backwards
-      # compatibility guarantees or semantic versioning. It is not suitable for production usage.
-      #
-      # Do not use it.
-      # You have been warned.
+      # This type is not stable, and not subject to any backwards compatibility guarantees or semantic versioning.
+      # It is in early access. If you want access to this feature please join the EAP. https://launchdarkly.com/docs/sdk/features/data-saving-mode
       #
       class ChangeSetBuilder
         # @return [String, nil] The current intent ({IntentCode})
@@ -582,11 +546,8 @@ def add_delete(kind, key, version)
       #
       # Update represents the results of a synchronizer's ongoing sync method.
       #
-      # This type is not stable, and not subject to any backwards
-      # compatibility guarantees or semantic versioning. It is not suitable for production usage.
-      #
-      # Do not use it.
-      # You have been warned.
+      # This type is not stable, and not subject to any backwards compatibility guarantees or semantic versioning.
+      # It is in early access. If you want access to this feature please join the EAP. https://launchdarkly.com/docs/sdk/features/data-saving-mode
       #
       class Update
         # @return [Symbol] The data source state ({LaunchDarkly::Interfaces::DataSource::Status})
@@ -623,11 +584,8 @@ def initialize(state:, change_set: nil, error: nil, revert_to_fdv1: false, envir
       #
       # SelectorStore represents a component capable of providing Selectors for data retrieval.
       #
-      # This type is not stable, and not subject to any backwards
-      # compatibility guarantees or semantic versioning. It is not suitable for production usage.
-      #
-      # Do not use it.
-      # You have been warned.
+      # This type is not stable, and not subject to any backwards compatibility guarantees or semantic versioning.
+      # It is in early access. If you want access to this feature please join the EAP. https://launchdarkly.com/docs/sdk/features/data-saving-mode
       #
       module SelectorStore
         #
@@ -643,11 +601,8 @@ def selector
       #
       # ReadOnlyStore represents a read-only store interface for retrieving data.
       #
-      # This type is not stable, and not subject to any backwards
-      # compatibility guarantees or semantic versioning. It is not suitable for production usage.
-      #
-      # Do not use it.
-      # You have been warned.
+      # This type is not stable, and not subject to any backwards compatibility guarantees or semantic versioning.
+      # It is in early access. If you want access to this feature please join the EAP. https://launchdarkly.com/docs/sdk/features/data-saving-mode
       #
       module ReadOnlyStore
         #
@@ -684,11 +639,8 @@ def initialized?
       #
       # Initializer represents a component capable of retrieving a single data result.
       #
-      # This type is not stable, and not subject to any backwards
-      # compatibility guarantees or semantic versioning. It is not suitable for production usage.
-      #
-      # Do not use it.
-      # You have been warned.
+      # This type is not stable, and not subject to any backwards compatibility guarantees or semantic versioning.
+      # It is in early access. If you want access to this feature please join the EAP. https://launchdarkly.com/docs/sdk/features/data-saving-mode
       #
       module Initializer
         #
@@ -714,11 +666,8 @@ def fetch(selector_store)
       #
       # Synchronizer represents a component capable of synchronizing data from an external source.
       #
-      # This type is not stable, and not subject to any backwards
-      # compatibility guarantees or semantic versioning. It is not suitable for production usage.
-      #
-      # Do not use it.
-      # You have been warned.
+      # This type is not stable, and not subject to any backwards compatibility guarantees or semantic versioning.
+      # It is in early access. If you want access to this feature please join the EAP. https://launchdarkly.com/docs/sdk/features/data-saving-mode
       #
       module Synchronizer
         #
diff --git a/spec/impl/data_system/fdv2_datasystem_spec.rb b/spec/impl/data_system/fdv2_datasystem_spec.rb
index 488a0fd9..44c85548 100644
--- a/spec/impl/data_system/fdv2_datasystem_spec.rb
+++ b/spec/impl/data_system/fdv2_datasystem_spec.rb
@@ -36,7 +36,7 @@ def build(_sdk_key, _config)
 
             data_system_config = LaunchDarkly::DataSystem::ConfigBuilder.new
               .initializers([td_initializer.test_data_ds_builder])
-              .synchronizers(td_synchronizer.test_data_ds_builder)
+              .synchronizers([td_synchronizer.test_data_ds_builder])
               .build
 
             fdv2 = FDv2.new(sdk_key, config, data_system_config)
@@ -78,7 +78,7 @@ def build(_sdk_key, _config)
             td = LaunchDarkly::Integrations::TestDataV2.data_source
             data_system_config = LaunchDarkly::DataSystem::ConfigBuilder.new
               .initializers(nil)
-              .synchronizers(td.test_data_ds_builder)
+              .synchronizers([td.test_data_ds_builder])
               .build
 
             fdv2 = FDv2.new(sdk_key, config, data_system_config)
@@ -110,7 +110,7 @@ def build(_sdk_key, _config)
             td = LaunchDarkly::Integrations::TestDataV2.data_source
             data_system_config = LaunchDarkly::DataSystem::ConfigBuilder.new
               .initializers(nil)
-              .synchronizers(td.test_data_ds_builder)
+              .synchronizers([td.test_data_ds_builder])
               .build
 
             fdv2 = FDv2.new(sdk_key, config, data_system_config)
@@ -139,9 +139,10 @@ def build(_sdk_key, _config)
             data_system_config = LaunchDarkly::DataSystem::ConfigBuilder.new
               .initializers([td.test_data_ds_builder])
               .synchronizers(
-                MockBuilder.new(mock_primary),
-                td.test_data_ds_builder
-              )
+                [
+                  MockBuilder.new(mock_primary),
+                  td.test_data_ds_builder,
+                ])
               .build
 
             changed = Concurrent::Event.new
@@ -192,9 +193,10 @@ def build(_sdk_key, _config)
             data_system_config = LaunchDarkly::DataSystem::ConfigBuilder.new
               .initializers([td.test_data_ds_builder])
               .synchronizers(
-                MockBuilder.new(mock_primary),
-                MockBuilder.new(mock_secondary)
-              )
+                [
+                  MockBuilder.new(mock_primary),
+                  MockBuilder.new(mock_secondary),
+                ])
               .build
 
             changed = Concurrent::Event.new
@@ -236,7 +238,7 @@ def build(_sdk_key, _config)
 
             data_system_config = LaunchDarkly::DataSystem::ConfigBuilder.new
               .initializers(nil)
-              .synchronizers(MockBuilder.new(mock_primary))
+              .synchronizers([MockBuilder.new(mock_primary)])
               .fdv1_compatible_synchronizer(td_fdv1.test_data_ds_builder)
               .build
 
@@ -285,7 +287,7 @@ def build(_sdk_key, _config)
 
             data_system_config = LaunchDarkly::DataSystem::ConfigBuilder.new
               .initializers(nil)
-              .synchronizers(MockBuilder.new(mock_primary))
+              .synchronizers([MockBuilder.new(mock_primary)])
               .fdv1_compatible_synchronizer(td_fdv1.test_data_ds_builder)
               .build
 
@@ -345,7 +347,7 @@ def build(_sdk_key, _config)
 
             data_system_config = LaunchDarkly::DataSystem::ConfigBuilder.new
               .initializers([td_initializer.test_data_ds_builder])
-              .synchronizers(MockBuilder.new(mock_primary))
+              .synchronizers([MockBuilder.new(mock_primary)])
               .fdv1_compatible_synchronizer(td_fdv1.test_data_ds_builder)
               .build
 
@@ -404,9 +406,10 @@ def build(_sdk_key, _config)
             data_system_config = LaunchDarkly::DataSystem::ConfigBuilder.new
               .initializers(nil)
               .synchronizers(
-                MockBuilder.new(mock_primary),
-                MockBuilder.new(mock_secondary)
-              )
+                [
+                  MockBuilder.new(mock_primary),
+                  MockBuilder.new(mock_secondary),
+                ])
               .fdv1_compatible_synchronizer(td_fdv1.test_data_ds_builder)
               .build
 
@@ -444,7 +447,7 @@ def build(_sdk_key, _config)
 
             data_system_config = LaunchDarkly::DataSystem::ConfigBuilder.new
               .initializers(nil)
-              .synchronizers(MockBuilder.new(mock_primary))
+              .synchronizers([MockBuilder.new(mock_primary)])
               .fdv1_compatible_synchronizer(td_fdv1.test_data_ds_builder)
               .build
 
diff --git a/spec/impl/data_system/fdv2_persistence_spec.rb b/spec/impl/data_system/fdv2_persistence_spec.rb
index 5ce1c075..8eee67cc 100644
--- a/spec/impl/data_system/fdv2_persistence_spec.rb
+++ b/spec/impl/data_system/fdv2_persistence_spec.rb
@@ -124,7 +124,7 @@ def get_data_snapshot
 
           data_system_config = LaunchDarkly::DataSystem::ConfigBuilder.new
             .initializers(nil)
-            .synchronizers(td_synchronizer.test_data_ds_builder)
+            .synchronizers([td_synchronizer.test_data_ds_builder])
             .data_store(persistent_store, :read_write)
             .build
 
@@ -180,7 +180,7 @@ def get_data_snapshot
 
           data_system_config = LaunchDarkly::DataSystem::ConfigBuilder.new
             .initializers(nil)
-            .synchronizers(td_synchronizer.test_data_ds_builder)
+            .synchronizers([td_synchronizer.test_data_ds_builder])
             .data_store(persistent_store, :read_write)
             .build
 
@@ -210,7 +210,7 @@ def get_data_snapshot
 
           data_system_config = LaunchDarkly::DataSystem::ConfigBuilder.new
             .initializers(nil)
-            .synchronizers(td_synchronizer.test_data_ds_builder)
+            .synchronizers([td_synchronizer.test_data_ds_builder])
             .data_store(persistent_store, :read_write)
             .build
 
@@ -240,7 +240,7 @@ def get_data_snapshot
 
           data_system_config = LaunchDarkly::DataSystem::ConfigBuilder.new
             .initializers(nil)
-            .synchronizers(td_synchronizer.test_data_ds_builder)
+            .synchronizers([td_synchronizer.test_data_ds_builder])
             .data_store(persistent_store, :read_write)
             .build
 
@@ -283,7 +283,7 @@ def get_data_snapshot
 
           data_system_config = LaunchDarkly::DataSystem::ConfigBuilder.new
             .initializers(nil)
-            .synchronizers(td_synchronizer.test_data_ds_builder)
+            .synchronizers([td_synchronizer.test_data_ds_builder])
             .data_store(persistent_store, :read_only)
             .build
 
@@ -307,7 +307,7 @@ def get_data_snapshot
 
           data_system_config = LaunchDarkly::DataSystem::ConfigBuilder.new
             .initializers(nil)
-            .synchronizers(td_synchronizer.test_data_ds_builder)
+            .synchronizers([td_synchronizer.test_data_ds_builder])
             .data_store(persistent_store, :read_write)
             .build
 
@@ -353,7 +353,7 @@ def get_data_snapshot
 
           data_system_config = LaunchDarkly::DataSystem::ConfigBuilder.new
             .initializers(nil)
-            .synchronizers(td_synchronizer.test_data_ds_builder)
+            .synchronizers([td_synchronizer.test_data_ds_builder])
             .data_store(persistent_store, :read_only)
             .build
 
@@ -401,7 +401,7 @@ def get_data_snapshot
 
           data_system_config = LaunchDarkly::DataSystem::ConfigBuilder.new
             .initializers([td_initializer.test_data_ds_builder])
-            .synchronizers(td_synchronizer.test_data_ds_builder)
+            .synchronizers([td_synchronizer.test_data_ds_builder])
             .data_store(persistent_store, :read_write)
             .build
 
@@ -440,7 +440,7 @@ def get_data_snapshot
 
           data_system_config = LaunchDarkly::DataSystem::ConfigBuilder.new
             .initializers(nil)
-            .synchronizers(td_synchronizer.test_data_ds_builder)
+            .synchronizers([td_synchronizer.test_data_ds_builder])
             .data_store(persistent_store, :read_write)
             .build
 
@@ -467,7 +467,7 @@ def get_data_snapshot
 
           data_system_config = LaunchDarkly::DataSystem::ConfigBuilder.new
             .initializers(nil)
-            .synchronizers(td_synchronizer.test_data_ds_builder)
+            .synchronizers([td_synchronizer.test_data_ds_builder])
             .data_store(nil, :read_write)  # No persistent store
             .build