It's got a very interesting pixel layout, different even from previous tandem OLEDs. Hard to describe quickly in words, but shown in Figure 2 here: https://www.apple.com/ca/macbook-pro/proled-xdr-display/pdf/... I imagine some of the C-shaped empty space is probably to accommodate the per-pixel emitter transistor.
Too bad they didn't go for the fifth generation panels with RGB layout. I have one of those monitors and it's so good, text is extremely crisp and of course zero fringing.
On retina it won't be as annoying as on a normal monitor obviously.
I'm curious to see this in person. Looks like the "PROLED" is not using an RGB stripe layout.
Pixel density can reduce text fringing, but I have not seen a laptop OLED panel that renders text as well as an LCD yet.