- Miscellaneous small fixes to better support using Sorbet on JRuby. (sorbet/sorbet#1216, #6592)
- Improve detection of Java module support when launching JRuby (also in jruby-launcher 1.1.14). (#6608, #6615, #6617)
- RubyGems updated to 3.1.6. (#6294)
- Build improvements to ensure all parts of default and bundled gems ship in the distribution archives. (#6604, #6609, #6618, #6619)
- zlib fixed to properly handle extra data in stream after inflate finishes. (#6606, #6612)
- Minor updates to align standard library with Ruby 2.5.8. (#6611, #6624)