People are saying come Summer, Canon is going to be saying TA-DA!! at the Paris Olympics.

Canon EOS R1 Specifications (Rumored/Translated)

High-speed autofocus and exposure enhanced by AI recognition

Moving object trajectory prediction, high success rate smart object lock focus tracking

30MP full-frame stacked dual-gain sensor

Purely electronic rolling shutter faster than any mechanical rolling shutter

1/1,250 sec flash sync time (<0.8 microsecond read time)

Added 1:3 lossy compression CRAW (compared to lossless compression)

Unlimited 40fps (1:2 CRAW) / 60fps (1:3 CRAW) continuous shooting

Up to 120fps full-featured continuous shooting

Supports 240fps burst continuous shooting mode

1 second pre-shooting

Enhanced dynamic range, better than EOS R3 and EOS R5

Supports two benchmarks of 16-bit DGO-RAW photo shooting

In-camera depth of field stack RAW

6.7K 60p & 4.2K 120p (APS-C) 12-bit Cinema RAW Light recording

Full-frame/APS-C DCI/UHD 4K 120p C-Log2 & C-Log3 video recording

Sleek body optimized for maximum hand feel