Everyone is going to say iWatch. But that's nothing.
The two biggest for me will be an App Store for the AppleTV. This could put the end to Nintendo's console hopes forever and open up a lot of new revenue streams. And the biggest by far is payments. iBeacons is starting to take off and with AppleID/TouchID they have the frictionless security mechanism.
frictionless? My touch ID is crap - try doing physical work (building, digging, that sort of stuff) and it will never go. Or a hint of dampness. My thumb print must be subtly different day to day or something, because I only do building stuff at weekends, yet no matter how often I re set the touch ID, even having all 5 prints set to my thumb, I end up entering password most times.
The two biggest for me will be an App Store for the AppleTV. This could put the end to Nintendo's console hopes forever and open up a lot of new revenue streams. And the biggest by far is payments. iBeacons is starting to take off and with AppleID/TouchID they have the frictionless security mechanism.