v12 of the runtime for -my- language of choice should be out in the next couple of months, complete with pluggable keyword support blessed in core and a whole bunch of other goodies. And Perl5 is being cleaned up over time - strict and warnings going on by default if you ask for a new enough version of the VM, old and weird misfeatures going through deprecation cycles, etc.
Perl5 and Perl6 are two different languages from the same family, not a "next version" and "previous version" like python is - the confusing naming is a historical accident from before Larry turned Perl5 over to its community and we got the chance to pick up development again.
Rakudo releases a new version on third Thursday of every month, as it has since December 2007.
"Common things that are known to have problems or not work in Rakudo (As of 2009-02-28.)" list contains "variables in regexes". It doesn't really matter how often they release in that case...
That's "as of february this year" and still open in november.
No one claimed otherwise. Perl 5 is 15 years old and still not "complete".