KDE Plasma 6.7 adds per-screen virtual desktops, Union theming system, and Wayland updates

KDE Plasma 6.7 introduces major enhancements for Unix-based platform users, including per-screen virtual desktops and a quick toggle for immediate switching between light and dark global themes. Alongside these, users can now test microphone volume directly and input special characters more easily by holding a key on the virtual keyboard. Building on these user experience changes, the system tray receives a badge to show active printer jobs and improved indications for background apps, especially Flatpaks. Users working across environments will appreciate easier connections to shared Windows network printers and a new print queue management tool for greater control. Usability receives a boost with faster virtual desktop switching, drag-and-drop favorites in the application menu, a clearer Discover software manager, a world clock widget with improved time zone comparison, and a “type-ahead” mode for file selection on the desktop. Following this, Plasma 6.7 debuts the Union theming syste...