Nokia is currently preparing two new Windows Phone handsets for AT&T, according to sources close to the company's plans. Nokia Prodigy is expected to be one of Microsoft's "superphones" for Windows Phone 8, due later this year, and the AC/DC will be a mid-range handset — both will launch on AT&T. Plans for Verizon, Sprint, and T-Mobile are unclear, but Microsoft is understood to be testing dual-core chipsets with a view to Sprint picking a potential Windows Phone 8 device.

HTC is also said to be preparing one or two high-end phones for AT&T, Verizon, and Sprint, although sources indicate that Sprint and Verizon may not have committed to a HTC device just yet. Details on Windows Phone 8 leaked out early last month, promising multi-core processor support, four screen resolutions, and an NFC "wallet experience." Microsoft is refusing to comment on its Windows Phone 8 plans, but the operating system update is widely expected to be made available later this year. We expect to see the Nokia Prodigy and AC/DC at the launch of Windows Phone 8.