Meet AT&T's Windows Phone 7 Lineup. It includes the HTC Surround (aka HTC 8788), Samung Focus (aka Cetus), and the LG Quantum (aka C900).

The HTC Surround features include a slide-out Yamaha speaker and 16gb of storage. The Focus sports a 4" super-AMOLED screen, and the LG Quantum has the slide-out keypad.

We hope to learn more about these three phones as Microsoft's Open House progresses.

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