This patent might shows the future Foveon Full Frame dual layer tech

Sigma promised us to deliver a new L-mount camera with Full Frame Foveon sensor And this new Sigma patent explains how this sensor might work

Instead of three layers of pixels the sensor would only use two of them With green pixels always present and the second layer alternating between red and blue pixels. Sigma says in the patent that this would allow the sensor readout time to be much faster. Guess it makes sense to have this on a large FF sensor!

via hi-lows-note