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 ??
The 6D only has to fit under the 5D Mark3 in terms of features.
What if the 5D Mark3 never appears and we get a 3D (next year) and a 6D this year?
And if the 3D moves up in terms of what it offers photographers and gets all of the hyped up video (even 3D video!) and the 6D becomes the FF DSLR "that also does video"?
Of course all of those 5D Mark2 owners that feel like their camera is linked to their ego will be suddenly overcome with waves on insecurity because a "lower model" camera will be better than theirs and will cry out in shame at how could Canon do this to them. Diddums.