Jailbreaking is not a crime, but the special legal exemptions that make it legal have to me made and re-made every couple of years. As the EFF notes, a deadline is fast approaching, and unless the Librarian of Congress makes a special explicit call that jailbreaking is still OK, it could fall into the realm of illegal.
iPhone 5 users have been waiting a long, long time for a jailbreak. Sure, the current versions of iOS have been opened, but unlucky kids with A6 chips and the fancy new Apple devices they come in have been out of luck. But no longer! Probably.
The beta version of iOS 6.1 is out, which means the real deal will be yours for the downloading, soon-ish. Get a load of all the kinda-minor updates you'll be enjoying and/or freaking out over, right now.