That's why I think Apple made the Watch fashion piece. Apple has already had their hit product and still sell it. I only think we will see another massive change IF the company starts to fall.
Hmm, this has more to do with the fact that the mobile computing market is maturing and that there is not a lot of room for new product categories. The directions are not ultraportable (wearables) and differentiating into adjacent markets such as medical. I see Apple doing both and moving more towards medical as regulatory requirements for medical devices have also become easier to adhere to.