Nikon's first teaser video for FF Mirrorless is on their site
The glowing ring makes the mount look huge but if you look close it is smaller than the glowing ring
I'm just going to chime in from the perspective of someone who uses Nikon pro bodies for work and would be looking to swap out his D810 against the Z7 versus perhaps going for a D850.
Its not going to be some moan about wanting to hammer nails in with it or tow it in the water behind a speedboat or some such but it is about the ergonomic differences between the pro bodies and those that use the PASM locking dial.
This will also hold true for anyone who uses a D850 in anger and was look