Specs are fairly similar to the MDA, actually, but the Wing speeds up that same OMAP processor a bit. It also has OK and Start menu buttons (thank you!) and a rubberized finish. Any doubts that this is coming to T-Mobile can be taken care of handily by pointing out the "MyFaves" icon on the back of the phone - plus, you know, the T-Mobile logo on the front.
Here's my only question: will it be 3G and therefore a harbinger of network upgrades for T-Mobile?
T-Mobile Wing (HTC Atlas) which scheduled to release in Aug, 2007.