AT&T has claimed a handful of exclusives for the holidays, led by the Lumia 920, One X+, One VX, and Xperia TL, and at its Unwrapped 2012 event we've had the opportunity to spend some time with all of them. The carrier also announced that it will be offering a variant of the Optimus G and Galaxy Camera, as well as two Windows 8 tablets, the Ativ Smart PC and Asus Vivo Tab RT.