Upload & Sell: Off
Re: the OP: I would be very surprised if NIkon put out another full frame camera next year. However, I think Nikon will almost certainly release a D7000 upgrade by the spring, and perhaps a D300s upgrade (it would unfortunately behoove Nikon to bring the out the latter first, a la D800/D600)
The lifecycle of the higher end cameras is getting longer as digital matures and the advancements are getting less, I doubt we will see a D2 era to D3 era step up ever again.
Do you need a camera now or in 4 years?
I'd add the corollary "if you don't really need/want a new camera don't buy one", with again the caveat that Nikon probably won't be doing any new FX bodies for at least two years. IMO, if you want such a thing, the time to get it is now.
From what I've heard even the D3 to D4 step up isn't that big even for its intended sports/journalist/etc pro customers (aside from video). Though these folks probably would have bought a new camera anyway after a few years because they use them so hard.
So where can I buy a new photographer? : - )
- a photography workshop (for beginners)
- more specialized training (for those with more experience).
- photography books by the greats and reflection on them + more time behind the camera and critical thinking about one's work (for all).
- a Masters of Fine Arts or even just basic art/graphic design courses (for those so inclined).
Another experience on Thom Hogan's resume which adds enormously to my value of his articles, as well as to his credibility, is his time as the editor at Backpacker magazine, and his experience not only with the photography consumption process at the magazine but his effort to improve the mag's photography quality. Not all of us can be in such a position, but just editing a camera club or other organization's newsletter or website can be eye-opening in terms of what works for photography.
Thanks also to Andy for that neat-o chart. I'd note that with this generation, we're really seeing some fragmentation from the previous lineup.