KDE announced that the next Plasma release will be the final one to include X11 compatibility.
The Plasma team is bundling the last X11 support into the upcoming version, after which only Wayland will be maintained. Existing KDE applications will continue to run, but new features and bug fixes will target Wayland exclusively. Users on older hardware or with legacy software are advised to test their setups before the cutoff.
This matters because many Linux distributions are already planning to ship Wayland‑only images. Dropping X11 simplifies KDE’s codebase and aligns it with the broader desktop ecosystem, but it also forces users to address any X11‑only dependencies. The transition could expose compatibility gaps in niche tools that haven’t been ported.
In short, KDE is pulling the plug on X11; if your workflow still relies on it, now’s the time to start looking at alternatives.