Can only 'perl6' parse Perl 6?

Question

There's that (relatively) well known Perl axiom, "Only perl can parse Perl." I'm wondering, will that remain true for Perl 6?

Expanding the discussion... I thought of this question given the recent update of PyPy. Does Perl's unique parsability preclude it from similar efforts? Is there much value in a restricted, static view of Perl code (PPI?)? Can Perl 6 have a JIT compiler?*

* I'm not sure if these concepts are related. Are they?