Backwards compatibility with Windows 7 2-finger touch is also a key focus of Microsoft



From DailyTech:

Microsoft Corp. (MSFT), the world's largest operating system maker, after hearing years of comments on how we are living in a "post-PC" era in which users are using their smartphones and tablets more than their PCs (supposedly) made one of the most ambitious moves in its history with its upcoming Windows 8 operating system. Microsoft decided to use touch to drive its interface.

  All Windows 8 PCs Will Have 5-Fingered Touch