Upload & Sell: Off
The D800E no way. There will be lots of people bad-mouthing it when it hits the streets, proclaiming it defective in spite of all the press about the differences. I don't have a need for sitting in front of a computer to try to correct Moire, etc.
As for the D800, maybe but it won't be right away if ever. I have a D4 on order and that is going to suit my needs better. When a D300s replacement comes, that will be a likely replacement for my D300 as I'd like to have one Fx and one Dx body. The D400 or whatever it's called has to be enough of an upgrade over the D300 and by that I don't mean just a D300 loaded out with better video. There has to be substantial gains in AF, metering and IQ of still images.
I see problems with the high MP cameras coming. All but the best glass won't perform well and even then your technique must be flawless. OTOH, the D800 is a heck of a lot cheaper than a Pentax 645 digital.....