Canon recently has filed a new patent for 83MP full frame CMOS sensor, you will find that 83MP full frame sensor is scaled up the new 32.5mp APS-C sensor to full-frame from the EOS 90D and EOS M6 Mark II. As already rumored before, Canon will announce a new high megapixel EOS RS to replace current EOS 5DS/5DS R, expected to be announced in late 2019 to early 2020.
Translated from JPO:
A large number of 4 columns × 4 rows of pixels (8 columns × 8 rows of focus detection pixels) shown in FIG. In the first embodiment, the pixel period P is 4 μm, the number of pixels N is 5575 columns wide × 3725 rows × approximately 2075 million pixels, the column direction cycle PAF of focus detection pixels is 2 μm, and the number of focus detection pixels NAF is 11150 columns horizontal × Vertical 7450 lines = About 830 60,000 pixels are described as an image sensor.