In the credits at the end they note that "All focus transition is performed by Movie Servo AF." I'd say it does a pretty good job of focus "racking" even without dual pixel AF. I have a 70D and it does a great job with focus racking as well but this new Rebel does a heck of a lot better than my old T1i did with contrast AF.
It looks like even though it doesn't have the "latest and greatest" video features (4K, etc.) you can still shoot a great video with this camera. It makes me want to go shoot something with my 70D.