for all those who are hurrying to buy the iPhone, you all should know that apple has released an update which kinda bricks your phone if you update it in its unlocked state
so you wont be carrying more than a paperweight in your pocket
heres more dope on the story
iPhone Firmware 1.1.1 Out and Tested: Breaks 3rd-party Apps, Relocks iPhones and Sends Them to Semi-Brick Activation Limbo (Updated with video) - Gizmodo