Slideshow: Microsoft's Windows Phone 7 Revealed

Microsoft has completely updated its mobile operating system with Windows Phone 7, which offers more of a social media focus than one might expect, complete with "hubs" for people, pictures, music, games, and office apps.

The home screen, or Start, on Windows Phone 7 Series can be customized with “live tiles” that show the latest updates from the Web directly to customers. For example, create a “live tile” of a friend to get up-to-date view of that person’s latest pictures and posts.