KitGuru would publish something faked? Have they done something like this before, or got it by mistake?
It's probably a joke, an attempt to provoke those dumber repost sites into embarassing themselves.
12 cores would be very unexpected (and unlikely), the clocks likely aren't possible either.
The question I have though, is: are the dates possibly legit?
(I assume they didn't get fooled by some photoshopping troll.)
P.S. From my publishing-world experience, most journalists wouldn't get slides in such an advance (month and half before the preorders), unless it was supposed to be announced in december. Possible? Dunno. And then if KitGuru was in the special circle, I doubt they would reveal them, barring perhaps AMD telling them to.
So the much more likely explanations are 1) they faked it themselves as a joke, as said above 2) they received it from some faker. In either of these options, the contents are fake, so just don't count on any of this at all, people! Chances are minuscule (<1%).