Microsoft has shown off a preview of the so-called Mango release for its  Windows Phone 7 smartphone OS. As expected, the OS is aiming to deliver over 500  improvements to the existing OS, most negligible and a few sizeable upgrades.   
Windows Phone will also add support for additional languages, expand access  to apps by launching Windows Phone Marketplace in new countries, and partner  with new OEMs to enable expansion to new markets.
"Seven months ago we started our mission to make smartphones smarter and  easier for people to do more," said Andy Lees, president of the Mobile  Communications Business at Microsoft. "With 'Mango,' Windows Phone takes a  major step forward in redefining how people communicate and use apps and the  Internet, giving you better results with less effort."
Availability
The "Mango" release will be available for free to Windows Phone 7  customers and is scheduled to ship on new phones beginning this autumn.
Microsoft also announced handset deals with Acer, Fujitsu and ZTE.
 

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