The upcoming Parrot release includes three months of work, so the list of release news is hard to gather.

Please edit with corrections and additions.

• New language: PHP ("Plumhead")
• Updated languages: Ruby ("Cardinal"), Tcl, Lua
• Compilers:
• PGE updated with more expressions, latest changes to S05
• new Perl6 grammar compiler
• PIR:
• new :init pragma for subs that must run before the main function
• new :vtable pragma to identify subs that override PMC vtable methods, eliminating the need for special subroutine names
• PIR parser/compiler does not stop on first syntax error
• Vanilla register allocator ("register alligator") greatly improves performance
• Eliminated limit on number of PIR macros
• PMCs:
• hash lookups return null instead of None for missing keys
• Added a new "Capture" PMC class
• Design:
• PDD13 "Bytecode files: format and manipulation" - new
• PDD10 "Embedding" - new
• PDD25 "Concurrency" - rewritten
• PDD15 "Objects" - new section on redesign requirements
• PDD07 "Coding standards" - significant updates and automated tests
• Test Suite:
• Many many more new tests
• Tests for source code standards
• Build Process:
• autoconf compatible install options
• Misc:
• Namespace refinements
• Coroutine improvements
• An impressive swarm of other bugfixes and enhancements