This is actually almost standard M-O for Canon DSLR's. About 2 weeks prior to the real announcement, some Canon affiliated web site "accidentally" posts some tidbit about the soon-to-be-announced camera. In this case, it looks like it was the name. Other times, it was a photo, or a spec sheet, or even a full draft of the press release.
I'd say we can expect an EOS 6D to be announced anywhere from 1 to 3 weeks from now.
While I agree about Canon's M-O for leaks, I don't see a 6D announced right now.
As the name suggests, a 6D would sit between the 7D and the 5DII.
The thing is, there's no need for an even more advanced 1.6x camera than the 7D.
But if the 6D is FF, what features could Canon possibly cripple, so that the 6D sits below the 5DII ??
Make it a 1-fps camera with just a single AF-point ??
I'd say that Canon Australia is pulling our proverbial leg here