Calennig

Update to Eclipse 4.12 (2019-06): drop support for 32-bit Java runtime and GTK 2.
Use Apache Ivy for dependency management, update to Ant 1.10.7 and new Grand core.
Fix a GTK 3 issue (thanks to @nghinv).

Spur

Upgrade to Ant 1.10.6 and Eclipse 4.9, use JPMS

Shortcut

Upgrade to Ant 1.10.1; more shortcut keys

Scroll

Support for basic gestures (pan and zoom); new icons based on SVG master, primarily for macOS and web.

Spearhead

Upgrade to Ant 1.10.0 (and drop an old workaround for GTK)

Sync

Upgrade to Grand core 1.9.3

Scion

The goal is to create a successor to the last official GrandUI release (0.7.2) running natively on macOS, Linux and Windows that incorporates Grand 1.9+ and Eclipse 4.6+

Chrysalis

Not yet a full-fledged release: no binaries available, only publishing publicly unavailable dependencies.