Well, I think this image pretty much drives home what this camera is capable of, or, rather, not capable of:
Despite the excellent lens (400 f/2.8L at f/4), the proper shutter speed (1/800th of a second), the low ISO (ISO 100), and the obviously in-focus image, the result still lacks the per-pixel detail you'd expect.
Normally I might chalk this up to a bad JPEG engine in the camera, but according to the EXIF data, this shot was processed with DPP, which means this is from the raw image.
Oh. My. Gawd.
We'll have to wait for the camera to hit the streets before we really see what it's capable of, but the 7D puts the images such as the above to shame. This camera will fall down hard if it's really as bad at retaining detail as the above image suggests it might be.
Again, I feel sorry for the hopeless optimists who have placed a preorder on this camera.
I won't do anything before I've seen some proper reviews and comparisons.