Gizmodo does it again ... look at what they have found! Demo videos at link.
Multitouch Goodness: Full-Screen Multitouch Mac OS X Is Here (But Not from Apple)
It's not from Apple, but it gives a pretty good idea of what to expect from them, especially knowing that only one guy—Christian Moore—got this system running at full speed on a simple Intel-based MacBook. His Lux free open framework enables true multitouch interaction in Mac OS X. In fact, he says it can work under any platform and even a web browser, enabling complex user interfaces and object manipulation comparable to Jeff Han's magic walls or the Microsoft Surface anywhere. We talked with Moore about how it works and what to expect from it.