During the Akadamy 2022 conference, David Edmundson of KDE spoke about the KDE desktop environment and the Steam Deck.
Alongside its Steam interface, the Steam Deck also has a fully-featured desktop environment running on KDE’s Plasma—a popular desktop environment for Linux.
According to Gaming On Linux, Edundson’s talk included the first real indication of how successful the Steam Deck has been for Valve, as well as the Linux operating system.
The Steam Deck is essentially a handheld PC running on a custom build of Linux.