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AT&T will be selling the three phones, from HTC and Samsung, during the upcoming holiday season.

From PCWorld:
Windows Phone 7 president Andy Lees unveiled the devices, which were manufactured by HTC and Samsung. There are the:

HTC Titan, with a spacious 4.7-inch display and front and rear cameras housed in a brushed aluminum shell that's only 9mm thick.
Samsung Focus S, with a 4.3-inch AMOLED display, front and rear cameras, a 1.4 GHz processor, super-thin profile and support for 4G speeds.
Samsung Focus Flash, the economy model in the group, with a 3.7-inch AMOLED display and 1.4 GHz processor.

Pricing and availability details haven't been released by AT&T.
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