Canon Mirrorless Camera Rumors
Sony has two great mirror-less full-frame Cameras out. Nikon is going to announce two on August 23rd, but what Canon is doing is still a mystery. There are professionals out in the field testing the Canon Cameras but there have been no leaks yet. There are rumored to be two models coming out, a flagship model which will compete with the Sony A7RIII and a lower mode, designed to compete with the Sony A7III. It is rumored that the flagship model will had the same resolution as the 5D Mark IV, which would be a mistake since both Nikon's mirrorless flag and the A7RIII are going to have close to 50% more megapixels, putting Canon on the backfoot. The new Canon Mirrorless Flagship should have 40+mp to compete.
Second is what mount Canon should go with. Here they have three options. Stick with the EF mount that all their DSLR cameras use, go with the already existing M mount, or design a whole new mount. If it were me, I'd stick with the EF mount because its still very good today and is big enough for Canon to build fast Lenses and features into. Unlike the Nikon F-Mount which has not been changed from the 1950s, the EF Mount was introduced in the 1980s and so does not have some of the problems the F-Mount does. If they go with the M-mount or build a new mount, they will be lagging behind Sony in the Native glass department by several years.