Nokia came out with their new strategy to change the world by collaborating with Microsoft. Stephen Elop and Steve Ballmer took the stage in London and announced that Nokia phones will no longer run on the Symbian OS rather a Windows Phone 7 OS. This can prove to be a turning point in the history of Nokia as they as struggling with their most difficult times in Mobile industry. The OVI Store of Nokia may be replaced by the Windows Marketplace or some interactions between Bing and OVI Maps.
To know more , you can check the presentation video here