Here are the first leaked pictures and specifications of the upcoming Canon EOS R full frame mirrorless camera (see also this post for the leaked Canon RF full frame mirrorless lenses):
30.3 Million Pixels Full Size CMOS
Dual pixel CMOS AF
The ranging range is 100 × width 88% of the live view video display range
EV-6 low brightness autofocus
4K video
Touch panel liquid crystal
Wi-Fi · Bluetooth installed
Dustproof drip-proof · magnesium body
Battery: LP-E6N
Battery grip: BG-E 22
Size: Width of about 136 mm × height of about 98 mm
Weight: Approximately 580 g
Mount: inner diameter 54 mm, flange back 20 mm, 12 pin
Mount adapter: "Mount adapter EF - EOS R" "Control ring mount adapter EF - EOS R" "Drop - in filter mount adapter EF - EOS R"