[BearOso]

LG was RWBG, but newer panels use RGWB, which works better with subpixel.

I wasn't aware of the FreeType harmony approach, but it looks like there's some problems, like no FIR filtering. The rapidly changing subpixel arrangements would also be difficult to accommodate. They'd have to have a new DDC command or something to poll the panel's subpixel matrix. I imagine by the time they got that through the standards bodies that RGB OLED would be ready.

[perching_aix]

The latest EDID version does support quite a few arrangements, all the ones in the real world at the moment included afaik.