It's more than that: free and open support for HDMI 2.1 in general. Previously it was only proprietary implementations that didn't leak the spec which were allowed. AMD is just the only one that has really good open source drivers which can benefit from it, and didn't work around the problem by converting HDMI to DisplayPort in a proprietary on-board GPU chip.

Intel only used the converters for 1st gen Arc dGPUs. Battlemage has native HDMI 2.1 and also ran into the same issues as AMD.

Wasn’t it the same with m1 macs, it also had a converter chip and did therefore only support hdmi 2.0.

OK, now this is what I wanted to know as well. I was not aware that changelogs show all this inf.

ty for sharing