Windows Phone 7 is a mobile operating system developed by Microsoft, and is the successor to their Windows Mobile platform.[2] It launched in Europe and Asia on October 21, 2010, and is due to launch in the US on November 8, 2010.[3] With WP7, Microsoft offers a new user interface, integrates the operating system with other services, and plans to strictly control the hardware it runs on.[4] Microsoft unveiled Windows Phone 7 on February 15, 2010, at Mobile World Congress 2010 in Barcelona[5] and revealed additional details at MIX 2010 on March 15. Windows Phone 7 was released to manufacturing on September 1, 2010,[6] and the final SDK was made available on September 16, 2010.[7]