>How do you know you want a D400 if you don't know what the >D400 will be like? Just because it wil be latest model?
Sounds like a poignant question. But it isn't. (I suspect it was meant to be rhetorical somehow, but since it really doesn't make a valid point it isn't a very good rhetorical question either.
First, I know what my D200 can do. I also know what a D300 can do. Having spent a good many years watching Nikon film and digital bodies evolve it is reasonable, obviously, to expect that the D400 (or whatever it might be called) will build upon and improve upon those two 'former' bodies. It is very reasonable, given the evolution of other bodies outside of the D100 lineage, to expect that the D400 will have superior high ISO performance to the D300 and vastly superior to the D200. I want that.
>By that reakoning you must already own a D1, D2, D3 and D4; >not to mention a D100, D200, D300, D700 and D800...