Lifehacker.com has a nice set of screenshots and feature listings from MacOS 10.7 Lion available here. Mission Control, which combines Dashboard and Spaces functionality, sounds like the feature that I would most look forward to using. There also seems to be many converging features between MacOS X and iOS including new touch gestures that mirror iPod Touch/iPhone/iPad gestures. This may take getting used to, because we have learned to do things on MacOS X that mirror the older mechanical features of mice scroll wheels, for example. However, learning new interfaces is good for the brain. Also, I wonder how much longer until Macs have touch interfaces. I believe that it is only a matter of time.