Cheap talk As most of the KDE people know, you can use Libinput on X11 but there are some issues with the combination of Libinput + X11 + Touchpad KCM.
New Mouse KCM is available! Now, there are bugs to fix in my schedule so I’ll more focuse on bug fixes then new features for sometime. Mouse KCM redesing is published. Touchpad KCM QtQuickControls2 Conversion is published.