We're told one of the new features in the upcoming Canon Cinema EOS C300 Mark II will be in regards to autofocus. While we weren't told exactly what the new tech was, it's apparently an improvement on Dual Pixel technology. The only other information we've been given is what you already know, the camera will shoot 4K and have a slightly different form factor.
We should see this camera announced some time next week, before NAB 2015 in Las Vegas begins the following week.
Yesterday, the current EOS C300 dropped in price by a whopping $5000.