As of 2020 most Linux distributions support Wayland out of the box, some notable examples are:
Fedora starting with version 25 (released 22 November 2016) uses Wayland for the default GNOME 3.22 desktop session, with X.Org as a fallback if the graphics driver cannot support Wayland.[79] Fedora uses Wayland as the default for KDE desktop session starting with version 34 (released 27 April 2021)
Ubuntu ships Wayland as default in Ubuntu 17.10 (Artful Aardvark).[80] Ubuntu reverted to X.Org for Ubuntu 18.04 LTS, as Wayland still has issues with screen sharing and remote desktop applications, and does not recover as well from window manager crashes.[81][82] Ubuntu ships Wayland by default in 21.04.[83]
Red Hat Enterprise Linux ships Wayland as the default session in version 8, released 7 May 2019.[84]
Debian ships Wayland as the default session for GNOME since version 10, released 6 July 2019.[85]
Slackware Linux included Wayland on 20 February 2020[86] for the development version, -current, which will eventually become version 15.0.
Manjaro ships Wayland as default in the Gnome edition of Manjaro 20.2 (Nibia) (released 22 November 2020).[87]