The new version comes with the following changes:
* X is now rootless with the help of systemd-logind, this also means that it
must be launched from the same virtual terminal as was used to log in,
redirecting stderr also breaks rootless login. The old root execution behavior
can be restored through the Xorg.wrap config file (man xorg.wrap). Please note
that launching X through a login-manager (gdm, kdm, …) doesn’t yet provide
* The default configuration files are now in /usr/share/X11/xorg.conf.d, all
host configurations are still taking place in /etc/X11/xorg.conf.d/ directory.
Please note that files 10-evdev.conf and 10-quirks.conf in /etc/X11/xorg.conf.d
could be renamed with .pacsave suffix, which could break your configuration,
then just rename them and remove the .pacsave suffix.
* Better glamor accelerated rendering, deprecating `glamor-egl` package.
* A new package `xorg-server-xwayland` that allows running X applications
inside a wayland session.
* The `xf86-video-intel` package doesn’t provide dri3 support anymore because
of multiple rendering bugs.