The video opens up with a few shots of cameras from Nikon's past as a narrator says 'all the expertise Nikon has acquired over the past 100 years has been poured into this camera.' Of course, 'this camera' refers to the impending full-frame mirrorless system set to be announced on August 23rd.
A slightly-brightened screenshot from Nikon's teaser video
After multiple detail shots of older Nikon cameras, the video teases yet another outline of the yet-to-be-seen mirrorless camera. The shot appears almost identical to that seen in the 'Mount' teaser video, but this time there seems to be an unrecognizable lens attached to the camera.
The teaser also shows Nikon branding on the front of the viewfinder bump, a detail missing from past teaser videos.