Pantech has an awesome habit of delivering a handful of fairly anonymous devices to AT&T -- C810
WinMo dual slider notably excepted -- and judging from what little we can gather in the test reports, we've got another one on the way. AT&T-bound models from the Korean outfit start with "C" (an homage to Cingular, no doubt) and this one fits the bill with GSM / EDGE on the 850 and 1900MHz bands. Other than that, though, your guess is as good as ours -- it seems pretty wide, though. A QWERTY piece, perhaps?