Kubuntu 26.10, code-named 'Stonking Stingray', is out today, released on the same day as the Ubuntu 26.10 base. It is an interim release, supported with security updates and critical fixes for nine months, until July 2027. What's on the ISO image: Plasma 6.7.5, with the Wayland session as the default, Qt 6.11.2, KDE Frameworks 6.29, KDE Gear 26.08.1 (Dolphin, Konsole, Okular, Kdenlive and the rest), Firefox 157 (Snap) and LibreOffice 26.8.1, Linux kernel 7.3. The Plasma X11 session is not installed by default and is not supported by the Kubuntu team. Kubuntu 26.10 is the last release where the plasma-session-x11 package will be available. If you still rely on X11, test Wayland on your hardware now and report what breaks. Plasma 6.7 brings per-screen virtual desktops, so each display can keep its own set. Discover has a clearer Install button and redesigned app cards. Switch between light and dark themes with a quick toggle, and try the new Union theming system as a tech preview.