Chipworks analyzed the Sony sensor used by the new Samsung Galaxy S7. And the sensor is the first with the Dual Pixel AF tech sourced from Sony:
It seems the full chip PDAF functionality, which requires dual readout from each pixel, was implemented with a multi-chip solution.
I can imagine Sony could implement the very same tech on larger sensors too. Imaging having a camera where every pixel has PDAF. This would be another standout feature on Sony cameras and one more reason for Canon/Nikon shooters to switch over to Sony…
found via Image sensor world (Thanks Animalsbarry)