Stable versions are vetted for bugs, and felt to be extremely stable.
Current stable version is 6.08.00RC8, released 2019-12-25:
All Other Downloads –
The previous stable version is 6.06.01, released 2016-07-30. See the release notes for the list of new features.
Development versions are early previews of the next production release.
The development version includes the latest features, but may also contain bugs.
WARNING: This is the bleeding part of the bleeding edge character generation technology. You were warned! 🙂
Current Development Cycle Release is 6.09.01, released 2019-09-14: