Microsoft just planted a massive flag in the ground with the debut of Windows Phone 7 Series. The company's new mobile operating system is a radical and potent departure from the past, and there's a lot to take in -- so we've gathered together all our knowledge and impressions of the device so far and rolled them into a single, concise guide. Of course, there will be plenty more to learn in the coming months, and we're going to be beating down Redmond's door for more details on this thing, but for now let's dive into what Microsoft has revealed so far about its latest and (potentially) greatest phone operating system.
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