November and December saw the usual monthly release of Parrot. However, November's release was particularly notable, as it was version 0.5.0. The minor version number increase came because it includes an implementation of the object design as specified in PDD15. This was a major piece of work, both in the implementation, and integration with existing language implementaitons.
The 0.5.1 release was also quite exciting. The major work for this release was converting a number of language implementations to use the new Parrot Compiler Toolkit, which includes NQP, a simple subset of Perl 6. This means that Parrot's Perl 6 implementation is now largely written in NQP, which is important since the use of NQP opens up compiler development to anyone who can write in a Perl-like language, as opposed to anyone who can write C or Parrot assembler.