Of course nobody will know for sure but I very much doubt that there will be a "big" price drop. The D700 will more likely fluctuate down over the years. It is still an excellent camera that photographers would have given an arm and a leg for a few years ago. Also, neither the D600 nor the D800 are 1:1 replacements of the D700, they are different model lines. The D700 is built like a tank and has better ergonomics than the D600, and it also has faster fps than the D800, especially with a grip. So I'm sure there will still be quite a bit of demand for the D700 and no supply other than on the used market. This should help with the value of the D700. Mine is certainly going nowhere.