Four months in development, the KDE Plasma 5.18 release is the second LTS (Long Term Support) series of the acclaimed Open Source desktop environment used by numerous GNU/Linux distributions, including Kubuntu, KDE neon, Manjaro, openSUSE, and many others. It comes two years after KDE Plasma 5.12 LTS, which will no longer receive maintenance updates, with a revamped notification system, Flatpak portal support, a Night Color feature, better integration of GTK apps, browser integration, redesigned system settings pages, support for managing Thunderbolt devices, and display management improvements.