Well why hasn't someone from Canon Inc. denounced this new product rumour as fake.
as if canon has denounced any of the wrong 5D MK3 rumors that where posted here over the years.
The NikonRumors.com site has been 99.9% accurate on both the D800 and D600 -> perhaps because Nikon has a pipeline of new tech and wants to get their user base excited about upcoming developments, so they leak pertinent bits of info along the way.
Canon rumours that you state as being wrong were mostly opinions given by CR commentators with a limited vocabulary like your own, rather than official manufacturer leaks or from sources known to be close to Canon.
If Canon did have a 70D or 7D2 for PhotoKina next week, do you think they'd allow such speculation to run rife about a mythical new product, one that CR has posted from different sources, this time from a Japanese website that is dedicated to the latest camera equipment news - where the article states explicitly that the rumour emanated from inside Canon itself.
Most rumours transpire to be at least partly true, therefore, a Canon EOS 6D looks likely to be on the horizon (whatever the ultimate specs are) - that is NEWS. The talk that it will be FF is newsworthy too, because it fits nicely into the xD designated product line numbers i.e. 7D is Crop but 6D and above is Full-Frame.
Only a fool would now dismiss the idea that a 6D is on the way.