Update: this one is BUSTED! This is a PS job.
This just in: Nikon AF-S 70-200mm f/4G ED VR. Don't know much about the origin of this picture, still working on it:
The golden letters are inconsistent and the lens appears to be too thick around the mount. I am not even sure if this will fit on a F-mount - this it could definitely be a PS job.
Maybe after the release of the Nikkor 16-35mm f/4G ED VR lens, Nikon will deliver a full line of new f/4 lenses.