Looks like a great design!
The bump in resolution, large battery life, and the increase in 3D performance all look very delicious!
The Cons would be:
Too large bezel around the screen
Glossy finish
Too large screen size! I'd prefer a 1280*720 resolution @ 9 or 10" over a 1366x768 resolution on a 12" device!
Also a pity they didn't go with an Atom N280 instead, though that may bump up the price, and lower battery life.
Of the 11hours promoted of battery life, I guess 7 hours will be the best we'll get browsing.
Also the GPU is stronger than intel's integrated graphics chip, which means gaming on a device like this might result in lower battery life than the intel variant.
Because it's a 12" device, we'll probably not see this launched under $399.
That's why I'd prefer this laptop (with smaller bezel, and an Atom N280) with a 10" screen, which can be gotten for under $300 in the right stores!
It's launchtime is probably also pretty bad, seeing that in 3 months, intel will come up with a new chip, and probably most people are waiting for these laptops!
Although I'd say this 12" version might outperform intel's upcoming netbooks in 3D gaming experience!