It doesn't go into detail about cool down. This is true. Although, it does give you an overall intention of the change.
Changes have been made so that at least 1 of Feoh Wizard classes’ attribute skills will remain activated:
At least 1 of Feoh Soul Hound / Feoh Soultaker / Feoh Storm Screamer / Feoh Arc Mage’s Origin Fire, Origin Water, Origin Earth, Origin Wind, Origin Holy, Origin Dark skills will remain turned on.