This generation will likely be different. Nikon will probably announce the D4 early next year, and the D800 very soon. If a 5DmkIII arrives early next year the

This generation will likely be different. Nikon will probably announce the D4 early next year, and the D800 very soon. If a 5DmkIII arrives early next year then both the full-frame series for each company will be updated. 1dx seems pretty evolutionary, it is likely that the D4 will also be similar.