Great news! "The Beast" has been announced.
Clearly early days, but I would offer the following published dimensions for consideration:
D850 146 x 124 x 78.5mm
D800 146 x 123 x 81.5mm
D810 146 x 123 x 82mm
Obviously, there are many other very detailed considerations regarding functionality, but at least, it looks like the D850 MIGHT FIT in existing housings. That's a start:)
The thickness of the body might be the most important dimension, given the new touch screen and ability to latch the housing, and in this regard, we might be in luck. The prism looks lower than the old pop-up flash of the older generations.
Time will tell and fingers crossed.
Any smarter people want to weigh in?
ian