Update proposals/README.md

Co-authored-by: Andrew Lamb <andrew@nerdnetworks.org>

Author: julienledem

proposals/README.md

@@ -42,7 +42,7 @@ Example: [https://github.com/apache/parquet-format/pull/221]
 
 Make sure you consider the [requirements document](https://docs.google.com/document/d/1qGDnOyoNyPvcN4FCRhbZGAvp0SfewlWo-WVsai5IKUo/edit?tab=t.0#heading=h.v4emiipkghrx)  to ensure the success of the POC. (Note: this doc would become a markdown page in the repo)
 
-*Transition:* There is enough clarity on the spec for the new feature and we have identified the reference implementations to be implemented to be able to release.
+*Transition:* There is enough clarity on the spec for the new feature and we have identified the 2 initial reference implementations for verification.
 
 ### Implementation
 Once we have reached enough consensus on the formalized spec change and validated it through the POC, we should have a clear idea of whether we want to pursue the implementation across the ecosystem.