Last updated: 2016-08-13
Quick answer: it's been released! Download it here
Perl 6 is a language specification. There is an implementation of it called Rakudo, and a distribution of Rakudo called Rakudo Star, which you can download here.
It has all the rest of the cool stuff you were promised:
A rich OO model with mixins, compositions, parametric roles, all sorts of fun stuff
Junctions, which are composite values
And almost everything else you'd want from an alpha of a new dynamic language...
How to download Rakudo Star
Although Perl 6 was originally envisioned as the next great version of Perl, the community now deems Perl 5 and Perl 6 as separate projects with separate development teams and project goals. Perl 5 continues to flourish into its 3rd decade and there is no plan for it to cease development anytime soon. Read more about it here.
One of Perl's strengths has always been CPAN. Perl 6 doesn't have a rich CPAN infrastructure yet, but a list of Perl 6 modules is available
Some quick links:
Rosetta Code shows how many different programming tasks are accomplished in many different languages. Over 700 Perl 6 examples are linked to from the Perl 6 category
Many examples are linked to from the official Perl 6 documentation
Rakudo has a JVM backend! That's cool, right?
There are a number of tutorials and code examples at the official Perl 6 documentation
There's an excellent blog
Perl Careers, for London-based Perl jobs made it.
It lives on Github