Microsoft's Peter Klein has announced today at a Morgan Stanley Tech Conference, that Microsoft has sold 90 million copies of Windows 7 to date.

Microsoft released Windows 7 on October 22nd, 2009 and it reached 10% of the market share in just three months.

Microsoft is rumored to be hard at work with their next version of Windows, Windows '8'. It is reportedly going to be very different from all of the other versions of Windows to date.

Microsoft is also rumored to be working on the first service pack to Windows 7, slated for release this September.