For the "still looks like a C5" comment, let's put things into perspective here:
The C5 is still current technology. We aren't getting the C6 because of necessity. We are getting the C6 because of Cadillac. If it wasn't for Cadillac wanting the XLR, we would still be in the C5 generation right now. Also, let's remember what GM has told us from day one: The C6 will be an evolution, not a revolution. So anyone expecting or hoping for a huge design change, like C4-C5, was just fooling themselves, and I have no idea why you had any expectations larger than that.
With that said, I think the C6 appears to be an excellent progression of the vehicle. Not only in performance (more horsepower and less weight), but also looks. It makes the C5 look like a pretty tired design, in my opinion. Especially when comparing the rear-ends, ie: the Road&Track picture.
Brett