Ok, let's get this out of the way. Yes, I KNOW that the iPhone 7 isn't coming out for another year. This is simply a thread created so that nobody else will need to. Namely a thread where people can discuss what they want or expect out of the upcoming phone until it comes out. Kind of like what they're doing in the Alternatives to iOS devices forum.
So what do I want? My number one request is AMOLED. I'm a huge fan of the displays on the newest, dare I bring them up, Samsung phones. And hate it or not, I think this is what

will do. Vibrant colours, thinner, and less power consuming. I also made a thread a while back about how iOS would be redesigned to complement an AMOLED screen.
Also, as good as the iPhone 6 design is, it's not perfect. I personally would like to see a glass back. Again, this is controversial, but I really think that this is the way to go. Also, instead of making it thinner, I think it would make more sense to decrease the bezel size. It would make the phone lighter and less unwieldy. Of course, they would have to sacrifice the home button and some of the battery, but make up for it with a pressure sensitive capacitive button and Touch ID embedded in the glass, and quick charging (also high on my wish list) and a more power efficient architecture, respectively.
Also other small things that would be good are waterproofing, wireless charging, front firing speakers and a better camera.
Interested to hear what others want to see.