Today AT&T posted a routine phone testing video (see below). Unfortunately for AT&T they forgot that they shouldn't use unannounced phones in their videos. Although the image is low quality, the device they are testing appears to be the HTC Liberty, first leaked by androidcentral on Sunday. As rumored, the phone appears to have a small (2.8 inch) capacitive touch screen running HTC's Sense UI. In addition, the phone has capacitive buttons along the bottom of the unit. This is great news for AT&T users waiting to jump on the HTC/Google bandwagon.