Now that's kind of bummer because you won't be able to switch cameras if you are recording in 120fps. Or maybe if you switch to 5x zoom or ultrawide it will fall back to 60fps. But seriously Apple why? It does make the 120fps feature a lot less useful. Perhaps this is another feature reserved, so that they can say "we now supports 120fps on main and ultrawide cameras!" for iPhone 17 Pro and "120fps on all 3 cameras" for 18 Pro?