I have it from that source of all truth in tradeskills, Niami Denmother, that tradeskills are changing. All tradeskills, not just combat arts for levels 1-19. The combat arts changed in todays live update were changed to the new system to avoid two changes, since the new character progression required that they be changed, anyway. The change for the rest of the combat arts is scheduled for February 21.
My previous post then was wrong, or incomplete. Apologies.