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Quad-bayer will be the future of photography.
It's like Dual-pixel AF, but better because they can scan horisontally and vertically like a cross type AF point.
And all 4 pixels can be used for resolution.
Also
Each microlens can act as 1 pixel for low-light Video/Jpegs.
Or they can act like 4 pixels in great light condition.
So it's literally the best of both worlds.