First it was a slide-out keyboard, then it was a secondary selfie camera, then you had the unification of Material design, and front-facing speakers. Then we had wearable devices, and fingerprint authentication scanners... and probably a bunch of jumps I don't remember.

But where is Android going next? It's been a while since I've seen any significant jump in Android or cellphone tech, and I'd like to have an idea as to where the next innovation is coming from.

For instance, I found Project Soli a few months ago: https://www.youtube.com/watch?v=0QNiZfSsPc0 This looks like something that could really change the face of cellphone interfaces.

Has anyone else come across a "probably likely" tech improvement?