Has anyone seen the preview for the forthcoming Mac Pro?

http://www.apple.com/mac-pro/

I have to admit how impressive it looks. And how small? Just 6.6" by 9.9". And a very interesting looking cooling design, venting all heat into a central heatsink from all components and using a single large fan at the top.

Hardware spec looks impressive too, although it looks like its a fixed design that won't be upgradable. And with the fixed SSD and no drive bays, all user storage would need to be external via USB or Thunderbolt, so not ideal in my view.