Windows 7, the successor to Vista, is only about 18 months or so away from its 'target' release.  Some features and info are starting to wiggle out of Redmond of late.  One thing that just got mention was surface computing features like that seen on Microsoft Surface (multi touch screen manipulation of the OS and programs).

Other features mentioned include:

• There will be a OSX-like dock, though how OS X-like is yet to be seen.
• Multi-touch gestures in photogalleries like two-finger zoom, flicking, and panning. Think of the photo app on the Microsoft Surface table.
• Multi-touch paint program where you can draw with 10 fingers (again, think of what you've already seen in Surface)
• Multi-touch piano app
• In-depth mapping application that pulls from Microsoft's Live Maps and Microsoft Virtual Earth

- Gizmodo.com

More details will continue to appear so keep an eye out.