Regarding characters made in the Remix

Anyone know if its been clarified whether or not characters made in the Remix are immediately available after it finishes? I know they say " join you in your continuing adventures through the Worldsoul Saga" but is that merely an extra little advertisement for TWW or is it literally they sit on your character list locked away till TWW launches?

Or until the event ends. I think we’re all assuming it will run up until patch 11.0, but the may wrap it up beforehand.