See http://fwierzbicki.blogspot.com/2012/05/on-behalf-of-jython-development-team... for the announcement.
Announcement content below:
On behalf of the Jython development team, I'm pleased to announce that Jython 2.7 alpha2 is available for download:
See the installation instructions: http://wiki.python.org/jython/InstallationInstructions
I'd like to thank Adconion Media Group (http://adconion.com/) for sponsoring my work on Jython 2.7. I'd also like to thank the many contributors to Jython.
Jython 2.7 alpha2 fixes a serious bug where site-packages failed to appear in the path. There are still some missing features, in particular bytearray and the io system are currently incomplete.
Please report any bugs that you find at http://bugs.jython.org Thanks!