First Usable Perl 6 Released

Yes.  You read that headline right!  The first release of a usable version of Perl 6 has been released!  Tarballs and an msi package (for Windows) are available for download.  The Rakudo Star release of Perl 6 is intended for early adopters.  The July 2010 Rakudo Star release announcement has all the details on what it is, what works, what doesn't, etc.  

Perl6.org has a ton of documentation available on language features, reference information, example code, etc.