The Canon EOS R5 is likely the DS126839 that has appeared for certification.
Also registered is a new camera accessory, which is likely a Speedlite. We originally thought it would be announced ahead of CP+, but I guess it makes sense to announce it when we get the official Canon EOS R5 announcement.
The new Speedlite is likely the DS586224 that has appeared for certification.
Update: As others have noted, DS586224 could also be the WFT-9A