Upload & Sell: On
The D800 is a Pro-sumer body,lots of pros like me,would prefer a D4x and be happy to pay for it.
I'm not sure I understand your classification of it as a prosumer camera...
If your point is pros and non-pros will buy it, I suppose I get it (though I think that is a lame way to classify). If not, I'm really confused about what isn't pro about it.
In any case, it is pretty clear Nikon is re-thinking how they stack their product line. To the guy who posted that it wouldn't be expensive to put another sensor in the D4 body, it isn't about the mechanics of it. It has to do with all the testing, country certifications, and a wide range of back-end costs it takes to bring any product (especially one with batteries) to market. It isn't cheap. At all. Recouping those costs on a low-volume body isn't necessarily a great bet in this environment.
Given what it is probably taking them to overcome the business disruption from the disasters in Japan and Thailand, my guess is they focused on getting the D800 and D4 out, and developing the D300s follow-on, whatever that will be. If there is a companion for the D4, I think that is 2013 or maybe even later...
Pure speculation is fun...