New rumors suggest that the Nikon D800 may be getting a refreshed in a similar manner that we saw with the Nikon D4s. The updated models is rumored to boost the sensor performance using the same 36MP sensor and a boosting in processing power with the new Expeed 4.
No specifics have surfaced in terms of release time frame (Photokina would be a safe bet) or pricing.
[via Nikon Rumors]