Feb. 15, 2010 at Mobile World Congress 2010, Microsoft Corp. CEO Steve Ballmer unveiled the next generation of Windows Phones, Windows Phone 7 Series.

With this new platform, Microsoft offers a fresh approach to phone software, distinguished by smart design and truly integrated experiences that bring to the surface the content people care about from the Web and applications. For the first time ever, Microsoft will bring together Xbox LIVE games and the Zune music and video experience on a mobile phone, exclusively on Windows Phone 7 Series. Partners have already started building phones; customers will be able to purchase the first phones in stores by holiday 2010.

Windows Phone 7 Series creates an unrivaled set of integrated experiences on a phone through Windows Phone hubs. Hubs bring together related content from the Web, applications and services into a single view to simplify common tasks.

Steve Ballmer, Microsoft CEO
Today, I’m proud to introduce Windows Phone 7 Series, the next generation of Windows Phones, In a crowded market filled with phones that look the same and do the same things, I challenged the team to deliver a different kind of mobile experience. Windows Phone 7 Series is a phone that truly reflects the speed of people’s lives and their need to connect to other people.

The first phones will be available by holiday 2010. Its including mobile operators AT&T, Deutsche Telekom AG, Orange, SFR, Sprint, Telecom Italia, Telefónica, Telstra, T-Mobile USA, Verizon Wireless and Vodafone, and manufacturers Dell, Garmin-Asus, HTC Corp., HP, LG, Samsung, Sony Ericsson, Toshiba and Qualcomm Inc.

More information at http://www.windowsphone7series.com
Source: Microsoft Press