Since Canon keeps leaking bits and pieces about the upcoming R3 camera, it's probably a good time to put some of the known bits together in one place.
- Full frame, new BSI-stacked image sensor of unknown pixel count, IS stabilized
- Up to 30 fps raw continuous frame rate with AF/AE
- Down to -7EV autofocus (though spec likely with f/1.2 lens)
- Addition of car and motorbike AF detection
- Eye control of AF system
- Smart controller on AF-On button
- "Next generation" dual pixel AF
- Combined lens+sensor stabilization up to 8 stops CIPA
- 4K oversampled
- Raw internal video recording
- Canon Log 3 video recording
- 5Ghz Wi-Fi, Ethernet port
- Magesium-alloy body with integrated vertical grip
- Dual card slots (CFe and SD)
- New powered accessory shoe built into front of hot shoe
- Flash sync with electronic shutter
- Fully articulating LCD
- Uses LP-E19 battery
Likewise, some of the things we don't know:
- Pixel count
- 8K video or not?
- Maximum HD/4K frame rates, bit depths, compression, time limitations
- Maximum mechanical shutter fps
- Whether or not there's pixel shift, focus stacking, etc.
- Viewfinder resolution and speed
- Availability and price info