Nikon D600 and Nikon D800’s new firmware updates now coming soon, rumors said Nikon is now working on it.
Firmware update for Nikon D600:
A fix for the Live View aperture bug (currently you cannot change the aperture in Live View during video).
Firmware update for Nikon D800:
Fix the focus priority bug (with AF-ON in Live View changing the aperture causes the screen to turn dark).