Hi @twainisalive
ACF Pro will abide by the new API functionality for term meta come 4.4 🙂
Currently ACF does not create it’s own tables for term meta nor does it use clashing function names so I think even if it did not update for these new changes everything would still work meaning a client that updates WordPress but does not update ACF should still be fine (altho stupid).
Hope that’s the answer you were looking for!