Windows Phone 7 Smartphones Unveiled (PHOTOS): See The Phones Running Microsoft's New OS

Microsoft, together with its partners, took the wraps off of several forthcoming smartphones that will be running Microsoft's new highly-anticipated operating system, Windows Phone 7.

Microsoft's tagline for Windows Phone 7 is "Always delightful and wonderfully mine." Windows Phone is "a different kind of phone," Microsoft CEO Ballmer said during a Windows Phone 7 press conference. "Get in, out, and back to life."

Microsoft has a lot riding on the new mobile platform: Ballmer, who saw his bonus docked over the firm's recent mobile missteps, has admitted that the company missed a cycle and is now playing catch-up in the mobile arena.

Microsoft said in a press release, "The goal for Microsoft’s latest smartphone is an ambitious one: to deliver a phone that truly integrates the things people really want to do, puts those things right in front of them, and either lets them get finished quickly or immerses them in the experience they were seeking."

The lineup of smartphones running Windows Phone 7 will be available in the U.S., as well as Europe and Asia, in "the holiday 2010 timeframe," according to Microsoft. Ballmer said during a press conference that Windows Phone 7 phones would be available in the U.S. by November 8.

In the U.S., AT&T will be offerring 3 phones running Windows Phone 7: the HTC Surround, Samsung Focus, and LG Quantum. T-Mobile will be offerring the HTC HD7 and Dell Venue Pro to its customers in the United States.

See photos of the phones and of Windows Phone 7 in the slideshow below, then check out early reviews of the operating system.