Score a victory for Joe Consumer, who according to the U.S. government, is fully within his legal right to unlock his iPhone, or any other mobile phone, without having to look over his shoulder for Johnny Law. Not that Apple or anyone else would ever go crying to the cops for trivial matters (wait a tick), but it doesn't matter now anyway.
Federal regulators approved a bunch of new exemptions to a federal law that prohibits circumventing technical measures companies put into place to prevent unauthorized use of copyrighted material. Apple has always taken the position that jailbreaking is an unauthorized modification of its software and violates copyright law, but under the new regulation, iPhone owners are within their legal right to unlock their mobile device and install third-party apps.
Regulators also approved the practice of unlocking cell phones to use on an unapproved carrier, another practice that already exists (scores of iPhone owners roll with unlocked phones on T-Mobile's network, even though the iPhone is available exclusively through AT&T) and is now out of the legal gray area.