Not going to start another discussion about the visual pros and cons of OLED vs. miniLED. What concerns me more is the question of PWM frequency. I noticed a striking change in eye fatigue coming from a 6Plus to a XS Max. iPP 12.9 with miniLED is just fine though. IMHO using OLED exclusively in upcoming macbooks would certainly be a dealbreaker for some people more sensitive to PMW, all the more so since the screens are significantly larger. On the other hand, I find it rather unlikely that Apple will be offering two fundamentally different screen technologies for the same product. Don't get me wrong, OLED is stunning and all but based on my personal experience I would not want to stare at OLED screens significantly larger than a phone all day long. YMMV though.