With the Foveon X3 CMOS coming out, the D100's imaging technology is obsolete before it comes out the door. I was really excited about the D100 when Nikon first announced it, but now it looks inadequate. See this month's Shutterbug or go to www.foveon.net
This along with other things I don't like about the D100: - 1.5x imaging relative to film - no exposure reading on most Nikon lenses - no multiple exposures - no mirror lockup
I'll probably wait until they come up with a new digital SLR using X3. I don't think they can be competitive if they don't.