You can read about the previous bugfixes and changes made for the beta version here:
- Bug  - getTurnRateRadians incorrect for negative velocity.
- Fixed issues with unit-testing and building Robocode on Linux.
Download Robocode 22.214.171.124 (final) from here
Download Robocode .NET plug-in 126.96.36.199 from here
Download Robot testing plug-in 188.8.131.52 from here