AT&T Customers can't buy iPhone at Apple Until Sunday BREAKING NEWS

UPDATE: The graphic overlay above seems to only show up on the Philadelphia-area store sites (Suburban Square, Lehigh Valley, and King of Prussia) at this time. Check with your local store if you're headed out to buy an iPhone, and you're an AT&T customer already...

You heard it here first. Heading over to the Apple iPhone page reveals a banner over the store picture as seen above, indicating that due to AT&T billing system updates, they will be unable to upgrade existing AT&T customers to a new iPhone until Sunday at noon.

Quite a bummer if you planned on picking one up this weekend, and it seems like precious little heads up for both customers and the stores.

It better be one heck of an update.. What would only affect the billing system at Apple stores... Hmm.. Speculate away...