Is This Proof for All Those iPhone Rumors?

AT&T (NYSE:T) has begun receiving cases meant for the iPhone 5 in its internal accessory systems that point to the fact that the next-generation Apple (NASDAQ:AAPL) smartphone will be taller than its predecessors.

Don’t Miss: Inside the New Mobile Landscape.

On Tuesday, Apple formally announced that it would hold a big event on September 12, and the invites included sufficient hints reflecting the subject of the conference: a shadowy image of the number 5, presumably for the iPhone 5.

Among other rumors that have circulated over the last few months are reports that the new phone will be LTE-enabled and include a faster new processor, as well as in-touch panels that make the device thinner.

Piper Jaffray analyst Gene Munster is estimating that sales of the new device could reach as high as 10 million in just the first week of its launch. Overall, he expects sales of at least 26 million units for the September quarter, which is higher than the average Wall Street estimate of between 22 million and 23 million. Last year, Apple sold 4 million iPhone 4S units in just the phone’s first three-day weekend in October.

Don’t Miss: What is Wal-Mart is Doing With Your iPhone?