It includes important changes and upgrades to the xorg server, linux kernel and graphics drivers. Also all KDE software for Plasma5, Applications and Frameworks has been updated to the latest versions.

Make sure to read this announcement carefully, as manual intervention might be required: https://community.chakralinux.org/t/upgrades-for-xorg-kernel-and-graphics-drivers-include-important-changes-and-might-require-manual-intervention/6479