It's an interesting rumor, but I'm not so sure that I'm ready to buy into it yet. Already, Nikon has supply problems with making enough D4's and D800's, adding a cheaper, potentially more popular FX camera would really just make that worse. Also, $2000 seems to be cutting it close to what you can sell an FX camera for at release. Unless they manage to cut down the manufacturing and parts costs a lot, I'm not sure this is plausible. And charging a more realistic price $2500+ really brings it too close to D800 territory to market it as an affordable FX.
Still, though, I think this would be a great camera to the line-up: it adds a low end FX which works well with the 28-300 and 24-120 lenses, and would add a smaller, lighter and cheaper FX body, which would be really nice to have. As much as I'm not yet convinced this is real, I'm more than ready to eat my words and buy one if this really does get announced this year.