If this has affected production of Pro bodies then it could potentially delay the launch of the D800, and as Canon always seem to follow Nikon, the delay of Canons 5D MkII replacement.
Unless Nikon moved production after the Quake, the D700 was made in Japan.
Lenses are made in Thailand, as well as the consumer DSLR's. This will hit Nikon hard, since the factory was likely running full tilt churning out cameras for Christmas sales. It is likely that 70% of those made for Christmas cameras and lenses have been shipped, but even a 30% cut in Christmas $$$ would hit extremely hard.
Canon announcements are on their own schedule, and won't be affected by a shortage of Nikon lenses. I doubt if any Nikon body announcements will be delayed unless they are for P&S.
Right now, the Canon decision to move some production to Taiwan rather than Thailand is looking wise.