Yes they redesigned the magnets just 2+ years ago & now they are doing away with the magnets all together for hooks that can break off easily rendering the train useless. It is nothing more than a greedy money making move to eliminate backwards compatibility so you have to buy all new trains and rolling stock. I see this move as very similar to what they did with Trackmaster.
I feel for people with large collections who want the latest and greatest trains from new seasons and specials but wont be able to connect them to their trains, maybe an adapter car with a magnet on one end and a hook on the other can be created...