The latest from Rumors:
45-46MP full frame CMOS sensor
Improved low and high ISO
New and improved version of SnapBridge
No built-in GPS
Tiltable LCD touchscreen just like the D750 and D500
Memory card slots: one SD and one XQD
AF system from the D5
No built-in flash (
from the teaser picture)
Back illuminated buttons (
from leaked pictures)
Joystick selector (
from leaked pictures)
Built-in Bluetooth and Wi-Fi (
from leaked pictures)
8K time-lapse video capabilities (
from promo video)
The D850 will be on display at the Photo+ Expo in October
4k UHD video in FX format (with no crop)
No EVF or hybrid viewfinder
Fast fps (8fps or more)
New: the D850 LCD will have twice the resolution of the D810
New: slo-mo full HD 120fps video
New: the SD slot will support UHS-II
New: improved LiveView split-screen display
New: improved silent shooting mode
New: improved battery life
New: lighter than the D810
Read more: https://nikonrumors.com/#ixzz4ob3IIA35