Looks like Nikon and Canon are on the verge

Lot of chat on the rumor sites and patent details of a new mount,new dual pixel focusing and new lenses,its looking like early this year could see something from Nikon.

https://nikonrumors.com/2018/01/18/a-quick-update-on-the-rumored-nikon-full-frame-mirrorless-camera-z-mount.aspx/

Yep. New lens mount but an adapter is rumored to become available at outset for F-mount lenses.

I'm betting lots of $$$ to start with, but we'll see.

Great news!