Learn more about perl 5 now and wait for perl 6. While you're about about it try learning more about C, scheme, lisp, Smalltalk, Java, Python, Ruby, Prolog, The shell, kernel architecture, zen and the art of motorcycle maintainance, data structures and algorithms, the music of Bob Dylan, and anything (or everything) else that interests you.

You're not going to regret it.

Slightly less flippantly, anything you do to learn about your craft is worth doing; you can pick up really useful and important stuff in the weirdest of places. Admittedly, Dylan's not going to do much for your Perl programming, but maybe he'll do something for your understanding of human nature and the rest of the world around you. Which is no bad thing. Or maybe he won't. Ah well, at least the journey was interesting.