It looks like the Windows Phone 7 stork will be making plenty of deliveries to AT&T when the OS if officially released. Engadget was sent another image of this HTC semi-sliding, Windows Phone 7 device… and it looks pretty sexy. As you can see, the device partially slides out in the landscape orientation to reveal not a keyboard, but a large speaker. The device, which is currently being called the T8788, is also reported to have a kickstand on the back; making this puppy seem pretty media-centric. What do you think of the sliding speaker? You like?