Sprixel: Revision 6
The name is a cute anagram of "Perl six". There is an existing but dormant version, and a radically different yet-to-be-released version.
So the Sprixel currently available at http://svn.pugscode.org/pugs/src/perl6/sprixel is an AST interpreter, but a fairly quick one when run on V8.
After several months of experimentation diakopter settled on C# as the new implementation language, to run on both the Mono and the .NET virtual machines. From Common Language Runtime bytecode, Sprixel will use a module called RunSharp to dynamically generate and execute native machine code. The new version of Sprixel will contain its own regex and grammar engine, and will probably have its own derived variant of STD.pm for the Perl 6 language definition. The microbenchmarks published in #perl6 so far promise extremely fast parsing and execution performance.