Rakudo Star 2012.10 will be released soon, but before that will happen, I’ll list changes in Perl 6 specifications and implementations. Not many changes, but many of those are very important. Personally, I find custom operators precedences, << >> quotes and prototypes in core subroutines very impressive improvements - it was all done in one week.
<< >> quotes now support interpolation.eval now sees custom operators.${variable} now makes better error message.read now exists again in IO::Socket.@array.map: &sin.