Hi
I didn’t notice an improvement, but then I don’t use the camera for anything ‘special’.
I’m sure there is some but the video in bright light is somewhat over sharpened.
Personally if I had a FP3 I wouldn’t rush to update the camera.
ideally find someone with an FP3+ or FP3 with the 48Mp camera and take the same picture to compare.
By the way, the 48MP is a 48MPs Quad Bayer so the output is 12MPx