I had ordered a D4 from B&H and waited three months with no indication of when delivery was going to happen. I found out that a company in Oregon called Shutterbug had one coming in and I called them and bought it. I received it the following week.
I'm not sure what is going on with B&H. They normally are very reliable but the lack of information on delivery on the D4 and D800 is not helping their credibility.
My suggestion is to check other retailers and you might get a pleasant surprise.