Thats what I thought since it's suppose to be a 5 year exclusive.
5 years was a rumor, but was never confirmed.
Personally (and without anything remotely close to a source for this) I think Jobs felt severely burned by AT&T when they pulled the bait and switch on the unlimited iPad data plans almost immediately after the iPad started shipping. Any chance AT&T was going to keep most favored network status and negotiate extensions to the exclusivity contract disappeared after that stunt.