If they have any similarity with Perl 5, I can only imagine good things.
It took 6 years for Python 3 to reach a decent level of usage and recognition (http://python3wos.appspot.com/), and that was with mostly minor language changes.
Perl 6 has been 14 years in the making and still doesn't have a stable version. Mindshare will be very hard to come by at this point.
Perl 6 is drastically different from Perl 5 (though clearly in the same lineage). Not only the language is quite different, but so is the design of the implementation.
So it's not much comparable.
Small changes = slow adoption.
Large changes = ?
While this does not apply to every situation, unless Perl 6 somehow manages to create a huge wave of hype, I'm not going to bet on it :)