I haven't a clue about the book but a bit of searching says: "This second edition covers recent changes to the language up to version 5.14."
I doubt it will be worth it. You should be able to pick the new features up yourself without much effort. And given that the first edition was released in 2006, the state (or rather, style) of Perl programming has not changed much (you should only be looking for a new book if the previous one was published around 2001 or earlier)
(I'm not sure that came out OK. I mean the old adage that Perl code written in 1994 looks very different than Perl code written in 2002, in terms of best practices)