Photo.net has posted a review of the Nikon D700.
It is merely a slightly reduced D3 while retaining most of the important features. Therefore, the D700’s strengths are essentially the same as the D3’s, minus a few somewhat important but not absolutely critical features such as a 100% viewfinder and dual compact flash card slots, but it is roughly 1/3 cheaper and a lot smaller.
For the latest news and reviews, checkout Photography Bay’s Nikon D700 Reviews and Resources.