What do you do with the output? How big do you print?

My hunch is the D4 will be more MP and similar in most ways between the current D3s and the past D3 with more MP.

I am thinking the D3s is the camera to have even AFTER the D4 is introduced as you wont have insane ISO like that ever again based on Nikon's news release a few months back saying they will not concentrate so deeply on ISO performance in the future.

So if your not printing huge (were talking 40" x 60"). Then I would probably get another D3s and use them till their shutters fall out.

That is the perfect camera for fast paced reliable action.

Roman