its not in any stable release of sddm, but its one of the exceptions Fedora makes for git releases in its stable branch. KDESIG devs were desperate to get an end to end wayland experience happening for the KDE spin.

https://fedoraproject.org/wiki/Changes/WaylandByDefaultForSDDM

Fedora 39 KDE/Kinoite already has this

Originally “PC” was IBMPC or PC Compatible (as in compatible with IBM without using their trademark). An IBMPC could have run DOS, Windows or even OS/2