Rakudo's still slow and doesn't have a lot of modules written for it, but this release is meant to address that by getting more users. It's considered good enough at this point to write normal programs in it.
The real question to me is not whether it's slow or fast, but whether those parts of Perl 6 that are included in Rakudo Star are stable, in terms of the language itself. I see no point in looking at any of this until I can feel secure that the parts of the Perl 6 language being included in such a release are finalized, and won't be changed in six months or a year.
The point of Rakudo Star is for people who aren't likely to run Rakudo from Git and Parrot from Subversion to write useful programs and give the designers and implementors feedback on what Rakudo and Perl 6 need to be even better.
The current central repository for Perl 6 projects -- http://proto.perl6.org/ -- has a number of cool projects, but they don't necessarily all run under the current Rakudo, as there have been two waves of major changes in the last six months, and not everyone has caught up.
And here's the number of tests it's passing now: http://rakudo.org/status
Rakudo's still slow and doesn't have a lot of modules written for it, but this release is meant to address that by getting more users. It's considered good enough at this point to write normal programs in it.