Xorg 1.18.0 is entering [testing] with the following changes:

- You can now choose between xf86-input-evdev and xf86-input-libinput.

- xf86-input-aiptek will not be updated and will be removed when xorg-1.18.0 
is moved to [extra]


Caveat:

NVIDIA drivers are not yet compatible with 1.18.0. You can block the upgrade
by appending --ignoregroup=xorg to the pacman command or adding 'xorg' to 
IgnoreGroup in pacman.conf

-- 
Laurent Carlier
http://www.archlinux.org