Earlier quoted context omitted.
The 12MP will be used for better framing, there is still almost no use case for 4k quality video conferencing
It is truly sad how bad Zoom / Google Meet / Teams are when it comes to video quality. I look at my local source vs the recording, and I am baffled. After a decade of online meeting software, we still stream 480p quality it seems.
A huge part of group video chat is still "hacks" like downsampling non-speaking participants so the bandwidth doesn't kill the connection.
As we get fatter pipes and faster GPUs streaming will become better.
edit: I mean... I could see a future where realtime video feeds never get super high resolution and everything effectively becomes a relatively seemless AI recreation where only facial movement data is transmitted similar to how game engines work now.