Samsung Launches ISOCELL: Innovative Image Sensor Technology for Premium Mobile Devices
Samsung has inserted barriers between photosites to reduce cross-talk by 30% and to permit larger photosites, thereby improving the chief ray angle 20% (i.e. accepting light at more oblique angles).
They've put this into a cell phone. I have no idea whether this would scale up or be advantageous for larger sensors. But 30% here and 20% there is a pretty good improvement.
Assuming this scales to larger sensors, it could be most beneficial for mirrorless cameras using adapted lenses with relatively oblique chief ray angles at the corners.