We found a new teaser which shows the nice and huge grip.
Not only does the grip seem to be great for bigger hands, it could also allow the usage of existing DSLR batteries. Of course this is only a rumor, but it would be a great one and simplify the change as well as a it would ensure a good battery time.
Also we see that the Swoosh we know from Nikon is still there.
The red element was introduced as a design element by Giorgetto Giugiaro in the Nikon F3 in 1980. So yes, it is a Nikon and they are not just selling Sony cameras 😉