Key points:
- Introduce plasma-login-manager as a modern replacement for SDDM.
- New virtual plasma-keyboard and OEM plasma-setup wizard.
- Critical improvements in Wayland: XRandr emulation and reliable screen mirroring.
- USB portal for security in isolated apps and OCR support in Spectacle.
- Accessibility controls for edge contrast and Wi-Fi connection via QR code.
I never liked KDE. I used it before there was GNOME but I used GNOME 2 for years and Cinnamon or XFCE after that.
I probably tried KDE4 once and KDE5 a couple times. Not for me. But I have used KDE a lot since Plasma 6. I have to agree with you. They are doing a great job. It is probably the best environment for Wayland.
I also use COSMIC a bit and Niri is my favourite environment. But I do seem to be using Plasma 6 a lot. It is sitting in front of me now.