G'day pfaut,

"... it was written in 2005 and hasn't been updated."

The book itself hasn't been updated; however, you may be interested in the video "Modern Perl Best Practices" which was released in 2014.

I don't own the video; although, I did watch a preview many years ago. I'm generally happy to recommend anything by TheDamian (Damian Conway's handle on PerlMonks).