The Nikon D3 is a great camera; however, some of the above references to it are misguided.
1. the high ISO capability is due primarilly to the large sensels. Those, who are expecting the successor with twice as many pixels but the same "pixel quality" will have some sobering moments,
2. the D3 does not have ISO 25,600, not even 12,800. The highest ISO is 6400; the rest is "pushing the exposure", useful only for JPEG shooters.