The next big wave for computers, at least as far as we can tell, is going to be these modular designs, so it's a race to see which major brand does it first,
Depending on what it is you're moving and how much of it you can move, it could really be the next killer app. It could relate to everything - from how you move movies, how you move music and how you move your pictures.
It's the next big thing. In the next few years you won't see a laptop without this kind of technology built in.