Adorama has a limited quantity of Nikon D800 in stock. Also, the Nikon D4 is in stock and shipping from Adorama.
Nikon D300s Starting to Ship
The Nikon D300s is beginning to become available at several retailers. Some have already been in and out of stock. Expect this trend to continue for at least the next several days, if not weeks.
You can keep checking back at these vendors for availability for the D300s.