Last night I had a chance to talk with my local Nikon dealer about the demand for the D800 and D800E. He indicated he is currently receiving 4 D800 units per shipment and getting one shipment per week. That is expected to increase a little as production and distribution ramp up. The current waiting list is for about 100 bodies - and the list is growing since new requests are still exceeding shipments.
The good news is the backlog for the D4 is almost cleared. They have a wait list of 15 units for the D4 right now.