See above. Nobody so far has seen a difference, and even if there is one the image quality with the stock camera app is still very bad compared with the Google Camera based apps. Use one of these if you want better image quality, don’t bother with the new module.
Edit: Back in 2020 I posted a few pictures taken with the old module and a Google Camera based app here. IMHO it’s a far cry from the stock software, and almost hard to believe it’s the same hardware.