Motorola announced at CES that both T-Mobile's Cliq and the new Backflip will be jumping from Android 1.5 to 2.1. They didn't officially announce a carrier, but there's plenty of information out there pointing to AT&T.
With a folding keyboard that leaves the QWERTY exposed when closed, and a "backtrack" touch pad on the back side of the display panel, Backflipe definitely has a few tricks up its sleeve. Novelty or practical design? I guess we'll find out when the review units start turning up.