I suspect content search. Imagine people's home filled with Apple TV, Macbook and iPad. Now what you need is content search. TV program search is done, and it i

I suspect content search. Imagine people's home filled with Apple TV, Macbook and iPad. Now what you need is content search. TV program search is done, and it isn't really much exciting than Netflix's suggestion. What about content people bought? Browsing history? Payment history? Medical? Calendar? Travel? Weather? They have a whole ecosystem they built since last release. As other speculates, a refined but better, unified version of spotlight, not just for iOS or OSX, but a truly search with their devices connected. With Sri now you can ask at home like Amazon's Echo, or ask Sri when you are driving. Content search is what matter these days.