Right, it seems like Blizzard wants to head in that direction but currently it's not working both on Live or PTR. Also, whatever Blizzard decides is something we sometimes have to accept ... Like Fury being one of the best specs in 7.1.5 and Arms falling behind. FR is in the same boat.
Whatever happens, I don't want to go back to the 2 and a half buttons of WoD in Arms. One of their worst rotational designs to be honest.