Microsoft will launch a wide range of Windows Phone 7 devices on October 21, Geek Cube has learnt.

According to sources familiar with the software giants plans, Microsoft will hold several launch events worldwide on October 21 to introduce its latest Windows Phone 7 handsets. Microsoft is planning to hold an open house event in New York City on October 11 where it plans to show off some of the new devices. Devices will hit retail shelves on October 21 in the UK, France, Germany Italy and Spain. Availability on October 21 in the United States is not yet fully confirmed. Read on for the full story…

Microsoft is planning to partner with a big London based radio station in the UK to promote Windows Phone 7. Orange, a long time Windows Mobile partner of Microsoft’s, is also expected to be a close launch partner for Windows Phone 7. If you thought you’d heard a lot about Windows Phone 7 recently then prepare to be bombarded with a major advertising blitz from Microsoft shortly. The Redmond based company is planning to go all out on Windows Phone 7 marketing.

Microsoft recently released the final build of Windows Phone 7 to manufacturing and claimed the company is “ready”. Terry Myerson, Microsoft’s Corporate Vice President of Windows Phone engineering said the company is just getting started. “This has been one of the most incredible product development efforts I’ve ever been a part of” said Myerson. Microsoft workers celebrated the RTM news with an iPhone and BlackBerry funeral at the Microsoft Campus in Redmond.

The software giant also demonstrated its support for Twitter and YouTube on Windows Phone 7, features that were absent in preview versions of the OS. Microsoft also announced that Zune services are going international for Windows Phone 7 launch.