Actually you don't need to do rocket science maths to calculate the possibility of a Semi-Pro FX cam hitting the market.
In the past, we believed that once FX hit the market eventually, DX lenses will be useless but Nikon managed to salvage DX lenses by making it usable with FX.
By launching, or upgrading rather, the ENTIRE range of DSLRs in Nikon arsenal, Nikon would be able to capture a larger market of DSLR users. Imagine, full frame with DX capabilities, low noise DSLR, just pick one that suits your budget.
The upgrading of all DSLRs to FX will be Nikon's ticket to turn the tide they have lost some 20 years ago.
The question to ask now is not if but when? The longer Nikon ponders about the question, the more time Canon and others have to play catch up. :think: