So that's my speculation. I'm hoping to be pleaseantly surprised!
Maybe we should do a poll on this ... imho it'll be a lot less than $2500 because once the 6d is released, the 5d3 priced will drop because of falling demand of people wanting a current ff camera but not willing to pay $3000+ ... Canon will not make the same 5d3 mistake again to price a comparable or inferior product much higher than the competition.
Is there any likelihood this fantastic camera would have a built-in wireless flash controller?? that would be soooo awesome
I don't think so - first then it'll be a tougher competition for the 5d3 with the need for an expensive and bulky wireless controller, and most important it might note be that easy to put a wireless controller into a rather solid camera body frame w/o sacrificing transmitting power and range.