This is the image if the upcoming Nikon D6 leaked at the Nokishita-Camera.
From the images, you can see the design of the front of Nikon D6 seems the same as the body at the time of development announcement, and it is noticeable that the pentagon part is larger than Nikon D5.
Below are the images on the back and the top, but the arrangement of buttons and dials is the same as Nikon D5, and it seems that the operation system has not changed at all.
See also 2020 Nikon Camera Deals
Read more Nikon camera rumors