KDE team also is. And GNOME (which I don’t care of, TBH).
BTW I found out that Krita can output 10 bpc. To make it do such you’ve to import the image with “High Dynamic Range UHDTV Wide Color Gamut Display (Rec. 2020) SMPTE ST 2084 PQ EOTF” profile. Not so obvious, is it? Interestingly, its Display section still show 8-bit srgb output, grayed out. No comments…