Looks good spec and seems long overdue. The spec seems its a big leap over the D300s, better than the small improvements in the D7xxx series. Looks like they may have taken a leaf out of Canon updates of the 7D range.
Hopefully this will drop the used prices of the D300s and the D7xxx range as I want to get back to a Nikon DX body but this new one will be well out of my price range.
Quite possibly, but not everyone wants FX, i know i don't (been there, tried it, went back to DX), but as the native ISO is now up to 51200 (over the 25600 of the D7200) i suspect it will be the best DX sensor in terms of high ISO capablility