i had my d200 and 2 lenses stolen outside of london, along with my passport -- that sucked, so i feel your pain...
not sure how serious you are, but if you are between casual and hardcore amateur/slightly-less-than-prosumer, i'd be waiting for nikon's micro 4/3rds, or maybe take a gander at used olympus pens (EP1 if you're on a budget).
problem is that no crazy glass is out for them, as far as i know, but then again, if all your lenses were lost, then you aren't being shortchanged by having all this high end stuff you can't use.
also, to everyone else, nikon's pro plant (i think D300 and above?) in sendai wasn't really damaged, but was closed following the tsunami (i think canon also had a lens factory in that area as well), so if you're in the market, be prepared for an increase in prices for the foreseeable future.