- JRuby 1.0.2: 54 scheduled - These are almost exclusively compatibility issues, though there's a few minor performance items and several stability fixes.
- JRuby 1.1: 147 scheduled - There's almost all the 1.0.2 bugs in here plus many additional performance enhancements and bug fixes that can't be cleanly/easily backported to 1.0.2.
- Post 1.1: 7 JRuby 1.x, 71 unscheduled - These bugs are in danger of getting punted to a future release, so if you have a bug in these lists or you see something you think you'd like to/want to fix, now's the time.
The big story is going to be 1.1. It will include a massive number of performance enhancements and bug fixes. It will include a complete Ruby-to-Java bytecode compiler, which is responsible for much of the performance improvements. And it should also include a completely reworked regular expression subsystem that eliminates one of the last really major bottlenecks running Rails code. We may not have that done for the 1.1 beta release at RubyConf, but it will be there for 1.1 final around a month later.
So if you've been looking for a chance to get involved in JRuby, hop on the mailing lists or start browing the bug lists above, and feel free to email me directly (email@example.com) if you have questions about any specific bug. JRuby needs your support!