My plan is to buy a 65" or 75" 8k TV and use it as computer monitor. I'll have a screen that is as big as my desk.
A display of that size will allow me to have my IDE, source control, terminals, log files, the app that I'm developing, my email, the CI dashboard all visible at the same time.
Of course I'll mainly use the bottom center of the huge display, but I think it will be a completely different experience when you no longer have to cmd-tab between apps but can just glance up/left/right to see what's going on.