(( ... that mean a expensive (around $2500 or more) Canon 6D
I would be shocked if a 6D was less expensive than the current MSRP for the 5D mark II, unless Canon lowered the mark II's price. Frankly, I expect a 6D to be right around $2,500 and Canon to discontinue the 5D mark II to make room in the lineup. Otherwise, the two would cannibalize each others' sales.
Just my $0.02.