Time flies, now we have Windows OS 7 milestone 3 (build 6780) release. From the screenshots, we can see MS have revamped the MS WordPad, MS Paint, MS Calculator to a Office-like application. Soon, all the apps in OS 7 will be filled with ribbons. (Following images are external links from UX Evangelist, I hold no rights)
Details of multi-touch technology is discussed here as well.