Yes, sadly it won't, I though canon would put this in for beginner film makers, but then people would freak out, because the 5d3 is supposed to be the best hdslr for video.
Also, on another poll, the majority of people voted that the 6d's image would look flat due to contrast issues. If you look at canon's test shots, (specifically the lemur one) you'll se what they mean, the 6d could be the new 1d mark iii! But rather than having sketchy af on some bodies, the 6d's contrast detection could be iffy, perhaps this is why canon didn't do video af, apparent
Y they were going to at some point?