There was room in there to fit flash support in there too.....
Look guys. Yes - they could have fit one in there but they chose not to. Why? Yes it saves a bit of space and yes it makes waterproofing a tad easier - but you're all still missing the big point.
The real reason they didn't put it in there is to strong arm the rest of the industry into focusing on wireless tech, otherwise they will just sit on their laurels as they have been doing for years because the jack is "good enough".
Thing is I don't want "good enough", I want better than that, and wireless will very soon be the better solution, and now Apple is forcing it that transition will happen even faster.
This has happened many times over the decades, as soon as Apple drops something the rest of the world rushes to fill the gap it has made, and every time without fail, given a couple of years to sort itself out, that gap has been filled with something better than was there previously.