The reason I am sceptical about this is the CanonWatch report contains the alternative designation of 3 instead of 5. Anyone familiar with rumours about Canon cameras for the last 12 years or so is familiar with the fabled 3 series of cameras that would fit between the 1D cameras and the 5D line. The thing is they never materialised. Maybe Canon was considering it, but when they bought out the 5Ds line, they still kept the 5. Which is what made me think the whole mythical 3 series was a figment of wishful thinking, and not based on anything Canon was ever really considering. This is what makes me sceptical about any mention of 3. Yes, Canon could slot in another line of camera, but that isn't what they actually did with the 5D line. What actually happened, is that Canon upped the specification of the 5D line, so they became tougher, gained AF systems close to the 1D line, rather than Canon creating a whole new line of cameras. The original 5D was prosumer type camera, and even the 5D mkII didn't have a top flight AF system. This is what the original 3 rumour was about, a full professional FF, none 1D camera. But the 5D mkIII and mkIV were that camera, not a 3.