I think the Dual Pixel AF is indeed revolutionary, and posted up my opinions on this a couple of weeks ago when the 70D was launched.
On a side note, it's nice to see Canon back at innovating new technology and pushing the industry forward. I was a little worried after the 5D3-vs.-d800 forum angst last year, but clearly Canon is responding. Next up... the 75mp body everyone's itching to see!
Thanks, Canon, for getting back on track!