What is the release date for Rakudo Star (perl6)?

Latest tentative date is July 29th 2010

And it has been released!

As per this post on 04/08/2010, the first major release of "Rakudo Star 1.0" is tentatively aimed at Q2 2010 (original plan was around April 2010 but was shifted due to personal circumstances involving lead developer).

Also, on 4/22/2010 they announced an April development release of Rakudo. That announcement stated: "This is not the "Rakudo Star" release announced for Q2 2010 -- we expect that to be shipped in June."

Not sure if this is good enough for you as a measure of progress, but they have a "Spectest progress" chart. That same status page has a list of things that work and don't work in Rakudo. The latter is dated 4/11/2010.

As for the planned features, please see the ROADMAP.

The number of stars in the "Really important items" and "Ought to have items" are an estimation of how much work is needed to implement that particular feature.

Update: If you are interested in Perl 6 development, this thread might also interest you: http://www.perlmonks.org/?node_id=837535