What's new:

• New regexp routines derived from Henry Spencer's.

  * Support for /(foo|bar)/.
  * Support for /(foo)*/ and /(foo)+/.
  * \s for whitespace, \S for non-, \d for digit, \D nondigit

• Local variables in blocks, subroutines and evals.
• Recursive subroutine calls are now supported.
• Array values may now be interpolated into lists: unlink 'foo', 'bar', @trashcan, 'tmp';
• File globbing.
• Use of <> in array contexts returns the whole file or glob list.
• New iterator for normal arrays, foreach, that allows both read and write.
• Ability to open pipe to a forked off script for secure pipes in setuid scripts.
• File inclusion via do 'foo.pl';

(Quelle)