AT&T and Verizon have both out and said they will be carrying WP8 devices, and T-Mobile has said they have been pleasently surprised by the success of the Windows Phone devices they carry now, so I don't see them backing off of it. If the other three are all carrying them, you can bet Sprint will. I am guessing AT&T will have 1 HTC device (the high end one, dubbed Titan something), 2 Samsung devices (Focus S2 and another low end Focus device), and 2 Nokia devices (Pureview and something more along the 800/900 end of things). Verizon will probably take between 1 and 3 (the best device that AT&T doesn't have exclusivity on) that they deem are the best and MAYBE 1 low end model (probably an HTC). T-Mobile will probably take a mid-low end Nokia and the middle or low (or both) of the leaked HTCs. Sprint will get a rebranded version of one of the Verizon devices.