^I've seen some images from it. It looks pretty bad ass. From what I've read it's Nikon's 'official' camera for fashion photographers. You can blow images up from the DX3 to billboard size. The downside is that it doesn't perform nearly as well as the D3 at higher ISOs.
Here's one of the first images I've seen from it. The detail is pretty crazy.
http://www.flickr.com/photos/jazminmillion/3121431835/