The best hypothesis is that they removed the headphone jack when they didn't need to, so people would lose their minds in 2016. Notice how there's still space f

The best hypothesis is that they removed the headphone jack when they didn't need to, so people would lose their minds in 2016. Notice how there's still space for the jack in the 7. So in 2017, when they actually need to remove the headphone jack (probably because the phone is more thin than is actually useful), it won't be as big of a deal. They're not going to say that in their keynote.