And openSUSE Tumblweed has KDE Plasma 6.6 now, runing great so far:

Operating System: openSUSE Tumbleweed 20260216 KDE Plasma Version: 6.6.0 KDE Frameworks Version: 6.23.0 Qt Version: 6.10.2 Kernel Version: 6.18.9-1-default (64-bit) Graphics Platform: Wayland