I haven't used Perl in about 12 years, has it changed much since then?

Do you have any links to good examples/comparisons?

chromatic's book, Modern Perl, has my highest recommendation:

http://modernperlbooks.com/books/modern_perl_2016/index.html

I've mentioned it before, but reading this book and applying its concepts (along with judicial use Damian Conway's Perl Best Practices) changed my view of Perl from "well, I guess I'll use it since it's here," to "I really enjoy using Perl".

Mark Jason Dominus's Higher-Order Perl was another enjoyable read, for its advice on using Perl as a more functional programming language.

To some, Raku is what Perl should have been by now: https://raku.org