We already known upcoming Sony a7S III will have a new sensor, now according to latest rumors from SAR, Sony will soon announce two new full frame 16bit sensors. These sensors are rumored for the upcoming Sony a7S III and Sony a7R IV/a9R.
New Full Frame Sensor 1: (Could be for Sony a7R IV or a9R)
- 16 channels (which is crazy, normally it should be 8),
New Full Frame Sensor 2: (Could be for Sony a7S III or a7 IV)
- on-chip PDAF
Some more info about these two sensors: