The leak of Nikon’s mirrorless camera mount indicates that the camera is finalized and probably already in production/field testing. Based on previous leaks, announcement is imminent in the next few weeks (Nikon will have a major announcement on August 24th). Three new lenses are expected to be announced with the new mirrorless system. As previously reported, the Nikon mirrorless solution will have a 2.6x crop factor with an image diameter of around 17mm. Here are the possible sensor/mount dimensions send by a reader:
Here are two comparisons of the Nikon mirrorless compared to m43 mount and the new Pentax Q mount.