It's a okay article, but they really should have mentioned the Perl 7 initiative as well as the fact that Perl is still installed by default on OpenBSD and some other BSD and Linux-based OSes.
There's not a timeline for that right now, nor clear consensus on what exactly will be worth a version bump or how much backcompat between 5.x and 7.x there will be going forward. It's being actively discussed, though; the Perl Steering Committee (formed a couple of years ago) meets weekly, and discussion on p5p (the language development mailing list) is still fairly active, though admittedly much less so than in years gone by.