We still have no 1.4 release. The two RCs look good on most OSes, but Windows is not willing to cooperate.
I installed a Windows 7 VM and tried to run the specs. They mostly failed on a Rake exception. I can investigate some more. I am still not convinced depending on RJB is the future. I would rather sever the links with it. My experience with Windows 7 showed me how hard it was to install Buildr on it. As a side note, I'm working on having rubinius support RJB, and Buildr, for fun and eventually profit. See my fork on github. We also JRuby 1.5 now officially out. We should try to support it correctly, which means more work on our end. All in all I think releasing 1.4 is now compromised, and we need to address stability issues related to RJB, as well as support JRuby 1.5 and in general become more OS independent to survive on the long run. Thanks, Antoine