A couple of other things that haven't been much highlighted:
- Perl 6 right now runs very well on two back ends: a custom VM and the JVM. It is spinning up a Javascript back end, I think primarily for NodeJS.
- Concrete representations are carefully separated from core semantics, so Perl 6 currently supports native values from C, Perl 5, Python, etc. It should be able to support native arrays as required for high performance scientific computing etc.