At this particular moment you cannot find a 3950 for MSRP. The nearest things that might be/have been in stock was $100 over with Silicone Lottery, IF they really came out yesterday and IF they are still in stock (which I doubt). Newegg had some for $900+. Talk is that stock will not be replenished until Jan or Feb.
IMO you might consider building your system out with a placeholder CPU till they come back at MSRP.