This is good news. Despite what the article says it's not novel to handle high dynamic range in color management. macOS does this already. The interesting part of this for me isn't the HDR but the fact that Linux will end up with macOS-level color management because of the necessity to clamp the UI to sRGB while allowing anything using an HDR-capable color profile to show as such... like macOS.
I don't have an HDR display, but I do have two high color gamut displays. And when using Linux and my displays set to Adobe RGB all the colors on the screens look neon because color management in Linux (Windows, too) only adjusts LUT values. Only apps like Krita, GIMP, Blender, Firefox (after manual configuration), etc. show correct color. It's pretty annoying. Hopefully that'll change one day.
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