We all know Apple planed the iPhone 7 from day 1 and are simply staging it over a series of years to maximise profits.

I expect Apple will start allowing screensaver/wallpaper type apps in the not too distant future. It'll open up another revenue stream for them.

We know it's almost ready to be rolled out (by looking to jailbroken iPhones) but Apple will want to iron out memory problems before releasing it (at least that's what they'll say).