You can now pre-order Nikon D700 and Nikon SB900 (updated)
Adorama:
You can now pre-order Nikon D700 DSLR body for $2999 here and Nikon SB900 flash here. They also offer the body + lens combo for $3599.95 here.
Amazon:
Update: J&R
Nikon D700 12-Megapixel Digital SLR Camera – Body Only