I'm not %100 percent sure. It was nothing too major (not enough to warrant a recall), but the designer's were not happy with some focusing issues. Anyways... It's been discontinued. You can only get one from someone who has stock. There won't be anymore shipped out.
I believe that they are shooting to have the D100 phase it out (in price as well), and move a D2 model into the price range that the D100 was available at. Probably around Christmas time, or in early 2005.
This I all heard from the photo dealer I purchase all my equipment from. That's why I got the Rebel for now... I wanted the D100, be he said if I could be held over, that in the new year I'm be able to get twice as much camera for the money.
How knows for sure though...