I can confirm via my own sources what CanonWatch also reported yesterday: I am now 100% sure Canon will announce a new mirrorless camera on September 4/5 (depending on where you live it will be Sept 4 or Sept 5).
I got no info about the specs of this camera…all I have been told is that it’s a big “mirrorless camera launch event”. Easy to guess that Canon will launch their answer to the Nikon FF mirrorless…