It is one heck of an interesting Camera(s). Unless it has some yet to be seen fault it could appeal to a wide range of shooters, not just Nikon shooters (do a quick check on some Canon forums ). Lots of MP, a move to FX with a big Dx crop, reasonable high iso, huge prints, HDR in camera, better Video and a not huge price.
I would think Nikon has a real winner. The only people that will not be jumping for it are those that shoot fast action and want, and know how to use, the high fsp or really dislike a cropped VF . That's OK, they have the D4 , and hopefully a D400 .
Since all of my cameras are better than I am(including the D200) I really do not plan on the D4 or D800 but I am really looking forward to some reports from users here. Shame that a D400 will require new batteries and grip Exciting times! Tom