Thanks for the interesting information. Like you, I have been waiting for a very long time for the D400. I have a friend who bought the D100. I outdid him by buying the D200. He outdid me by buying the D300 (not long after I bought the D200, to my chagrin). I then thought that I would again outdo him (this is all in a very friendly way of course) by buying the D400 but, so far, I have been unable to do that. I also have the D800. However, the frame rate of the D200 and the D800 does not compare favorably with the D300/D300s. So for sports and wildlife shooting I am still eagerly awaiting the arrival of the D400. However, at the age of 69, soon to be 70, I am beginning to wonder if the D400 will arrive at a time when I am still able to use it.