With all due respect to those who choose to believe differently; I don't believe for one second that Nikon is going to:
1) Abandon the DX format at any time in the foreseeable future; or
2) Let the D7000 represent the top of the DX food chain. There's far too great of a gap between the D7000 and the D800, both from the standpoint of price and technical capability. I absolutely believe we'll see a solid D300s replacement.