Sorry to be a "hater", but
I've been excited about the idea of an Apple "sub-notebook" ever since it started looking like the rumors were true. Getting rid of the drive and some of the connectors is a GREAT idea in my book. That said...
Has anybody ever grabbed a MacBook on their way out the door and said to themselves, "if only this goddamn thing could be a little bit thinner, it would really make my life simpler"???
The whole point of going small is to make it easier to tote around. A 9" screen with a smaller (but still usable) keyboard would have had me doing cartwheels. I want a mac that can fit in a purse. An keyboard-laden "iPod Touch on steroids", as it were.
Yeah, it's thinner, and SLIGHTLY smaller in other dimensions, but not enough to really make it much more portable than my trusty old MacBook, which is both faster and cheaper.
Don't get me wrong, if I had no laptop and was shopping for a Mac today, it would be a tough call between this thing and the MacBook... But nothing about the Air has me whipping out my credit card and putting my MacBook on Craigslist today. It's not the Life-Changing Appliance, just a relatively well-designed, relatively small-ish, relatively expensive laptop.
Frankly, the Apple TV update & price cut got me more excited than this thing did.