I bought a D800 instead of waiting to see if a D400 is ever produced. My D300s/D300 bodies now have telephoto lenses attached to them for wildlife shots. I use the D800 for everything else (and wildlife when I can get close enough to use it). This arrangement has worked well for me and I am quite happy with it. If the D400 does appear, As Thom Hogan believes it will, I doubt that I will buy it.