MuscleNerd announced earlier today that he is making great progress on an update to Ultrasn0w which will allow you to unlock the iPhone 4S. Of course, Ultrasn0w is dependent on jailbreaking so obviously they won't release the unlock until after a jailbreak has been released, but it is great news for those who bought their 4S directly from their carrier(like me) and have their devices locked to a specific carrier.
