You sound like you are a year or two out of date with your "current" understanding. The industry has moved to pancake lenses which make the view clear edge to edge. There's no more out of focus peripheral view, in recent headsets you read and look around using your eyeballs and not your head just like you would naturally.
It is already known that the Apple headset uses this updated optical system, along with micro OLED displays at super high resolution (approx double current industry standards). The clarity and focus are going to be absolutely amazing.