OLED is still better. No blooming and infinite contrast. I don't see Apple downgrading on it's flagship.
OLED has perfect blacks and, yes, higher contrast, but far lower brightness.
And despite what you read from reviewers who spend a short amount of time reviewing OLED TVs and other devices, OLED
still has screen burn-in issues.
And as far as the O in OLED, the organic materials do
degrade over time. (I’ve seen used OLED displays where
ALL the organic material has left pixels the whole screen over and these dead pixels don’t illuminate
at all. Color is all screwed up. It makes the skin and the colors on The Simpsons look normal.)
Not so with micro LED.
Like OLED, micro LED offers self-illuminating pixels for
each individual pixel, which can each be turned off, yielding
perfect blacks. And perfectly isolated as well, so zero blooming. And
much brighter.
The only place I can see micro LED improving after this, is, perhaps, separate lighting of
each R, G and B
sub-pixel.
(And that would only be appreciable to the eye on a GIGANTIC screen.)
OLED will be obsolete and micro LED will replace it. (But it can’t be soon enough.)
btw, manufacturers have tried displays that added a Y sub-pixel for yellow to RGB or a W for pure white, but after this brief experiment, they’ve all been discontinued and returned to RGB.
No one has yet improved upon Red, Green and Blue sub-pixels in color quality and picture quality.
(But I’m certainly open to it.)