I wasn't sure where to put this, as it could apply to both EOS and consumer or mirrorless devices.
Anyway, attached is a patent application for what seems to be a new method for phase detection autofocus, not requiring an AF sensor within target of a half mirror, quick return mirror, etc. From my understanding, the want to do away with a dedicated AF sensor for phase detection and instead incorporating it into the sensor would be either to save space and reduce the size of future entry-level SLRs, or as a method for a future mirrorless to knock over the competition. (As far as I know, the Nikon 1 is the only mirrorless to feature a form of phase detection at a sensor level, albeit "hybrid" with contrast detection.)
EDIT: Notice the focus on video and the allowance for switching between pixel skipping and binning.