Microsoft may be readying an all-out marketing blitz to get Windows Phone 8 all up in your cranium, but those loyal to Sprint won't be getting anything but perturbed. During today's Windows Phone 8 event in San Francisco, Microsoft CEO Steve Ballmer announced that AT&T, Verizon Wireless and T-Mobile were "all in" for Windows Phone 8. Strangely, however, America's number three carrier is evidently "all out." While Sprint was a carrier for Windows Phone 7 handsets like the
