Followed the live video stream today and all I have to say is a resounding meh. The Macbook Air has always been a very niche purchase which is why it didn't really take off the first time around.
The improvements in OS X Lion that I can recall were:
- "Mission Control"
- Mac App Store
- iLife 11
- Full screen apps (!!)
In short, not a very huge list of upgrades. I guess if you use iLife you may be happy with some of the features like "hot new slideshows" (oh my) amongst the list of features demoed. Mission Control looks like a logical extension to Expose and in the demonstration today, the touchscreen gestures frequently did not work as expected.
Mac App Store is really the biggest thing here, as they are trying to bring the App idea into the OS X system. Personally, I don't think it will work as well as Apple hope, but it will work better than it would on Windows, for example, because they have such a small number of developers and apps.
All in all, this looks like it's going to be priced as a snoreworthy $30 upgrade to Snow Leopard and dedicated Mac fanboys will once again come out and parade about how cheap Lion is compared to Windows 7.