D600/D800 Firmware Update Coming

D600 update will allow you to change aperture in live view during video mode.

D800 update will fix the focus priority AF-ON live view bug which can maker the screen go dark.

Not sure what other changes are coming, but these changes are very positive.

http://nikonrumors.com/2012/11/08/upcoming-firmware-updates-for-nikon-d600-and-d800.aspx/