Prediction: Apple will do away with optical drives.
Prediction: Apple will bring iOS features into MacOS X.
Prediction: Apple will make their laptops smaller and slimmer.
Prediction: Apple will do away with floppy drives.
As far as I can see, they just started doing away with the case of the hard drive mechanism in their laptops. As far as even their iOS devices go, they still have a notion of a separate persistent store with high latency characteristics completely separate from a non-persistent RAM.
What I'm talking about doing is making dynamic RAM, Flash RAM, and the cloud all just a part of the memory hierarchy with orthogonal persistence.
This is going to entail a lot of engineering which isn't yet in evidence in any of their current products. Such devices would never have to boot-up! I'm not sure such devices would be capable of being booted up. They'd also need more sophisticated error correction than current devices have. (Current devices can just correct the rare memory corruption event by being rebooted.)