Below is a list of all the unreleased Canon cameras and their codenames. We reported back in April that two full frame mirrorless cameras were being developed at the same time, and it looks like this list confirms that to be the case.
It looks like the K424 is being developed with a 30.4mp sensor, which is the same resolution as the EOS 5D Mark IV. We don’t know if the image sensors are identical at this time.
We also cannot confirm with absolute certainty which DSLRs the K436 and K437 are. Though there are a lot of assumptions and logical guesses as to what these cameras will turn out to be.
Wi-Fi · Bluetooth installed
Not compatible with smartphone’s Bluetooth remote control function
Maximum size of test image: 6720 × 4480
(Judging from the progress of development) Release in late 2018 to early 2019