Techradar posted an article on what gestures they expect to see in Windows 8

Microsoft's new Touch Mouse is a lovely piece of design in its own right.It's a comfortable wireless mouse that's great for just about any size of hand, works on literally any surface thanks to the BlueTrack optical technology and gives you the best of a mouse and trackpad combined. But it's also a clue to the gestures we expect to see in Windows 8.In the three years that the Microsoft hardware team has been working on the Touch Mouse - they had a prototype a month before Apple announced its own multitouch mouse - they've worked closely with the Windows and Surface teams and it shows in how well the gestures work with the Windows 7 features like Aero Snap and Aero Peek. But when Microsoft UK showed us the mouse again this summer, they let slip that these are gestures we'll see again in Windows 8.

  In Depth: Windows 8 gestures: what the Touch Mouse tells us