Hold on to your hats folks, Engadget just dropped a bombshell. The tech blog just published a photo it received from a tipster that appears to be of a screen from AT&T's internal retail software.
The screenshot looks like it was taken from the carrier's trouble ticket system, a place where reps can pass issues on to tech support. What's so interesting about the pic? It seemingly outs a new Apple device — the iPhone 4S...