Hard to know when Nikon is actually going to release the D4, but I doubt I'll be first in line to upgrade. I've had a D3 & D700 since 2008 and while I have some lenses on my list I'd like to get, I've actually been really satisfied with those two bodies. In terms of what I think about the D700, it's a great camera. My only complaint really is that the pop up flash is totally useless and the soft spot on the body design, and I wish it had two CF card slots.