For KDE Plasma 5.27 we did a big refactor on how the screens are managed

I wish they'd decouple the virtual desktops for multiple screens, just like i3 does. That would really be great to have in kwin.

I haven't seen the issues mentioned in the article but I run a desktop so my screens are always connected. I have a difficult script to deal with multi-dpi though but that's because X11 can't deal with it and Wayland KDE is broken on FreeBSD right now.

apparently this will fix long-standing issues with multi-monitor setups.

also https://www.phoronix.com/news/KDE-Plasma-5.27-Multi-Monitor

release is scheduled for 2023-02-14: https://community.kde.org/Schedules/Plasma_5#Future_releases