I am a big Mac fan, and I agree with most everyone here. It does look like an ash tray/trash can and I just hope they learned their lessons from the Cube.
I just want a current-design Mac Pro with an updated backplane, but it doesn't look like we will get it. I know Thunderbolt will offer expansion, but what is the point if you have to get an external thunderbolt enclosure to get a slot you need for X or for Y?
AMD was a poor choice on the GPU. They also should have offered a dual processor config.
Apple has proven before they can be stylish without imposition, but this time form definitely won over function. I gave up waiting on a new Mac Pro and went with a 15" retina and a Thunderbolt display. There are not many days now I miss the Pro, and being able to go portable is a bonus.