Here is a sneak peak of the new Canon EOS R which is supposed to be announced on September 5th.  All images are from the Japanese camera rumor website Nokishita first published the leaked images and details. Canon Rumors also published a set of specs.

Canon EOS R Specifications

• 30.3mp Full Frame CMOS
• Dual pixel CMOS AF
  • 100% vertical x 88% horizontal AF coverage (We think)
• EV -6 low brightness autofocus
• 4K video
• Touchscreen LCD
• Articulating screen
• Wi-Fi
• Bluetooth
• Microphone jack
• Headphone jack
• Dustproof
• Drip-proof
• Magnesium body
• Battery: LP-E6N
• Battery grip: BG-E22
• 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”

Canon RF 35mm f/1.8 IS STM Macro

• Size: Approximately 74mm (2.9 inches) × 62mm (2.4 inches)
• Weight: Approximately 306g (10.8oz)

Canon RF 24-105mm f/4L IS USM

• Size: Approximately 83mm (3.26 inches) x 107mm (4.2 inches)
  • Compared to the EF 24-105mm f/4L IS II 83mm (3.26 inches) x 118mm (4.64 inches)
• Weight: Approximately 698g (1.5lbs)
  • Compared to the EF 105mm f/4L IS II 795g (1.75lbs)

Photos of the four first RF lenses have leaked as well. Here are the 35mm f/1.8 M IS, 50mm f/1.2L, 28-70mm f/2L, and 24-105mm f/4L.