Headphone jack is a gamble but one that Apple knows they will win. They know it's a gamble as they include an adapter in the box. Apple didn't even include an aperture when 30pin went to lightning. Samsung was able to get the water resistant rating and keep the jack. I think they are pushing this as 'innovation' but really just got beat.
As someone who loves music it's crap. The Apple earbuds feel like crap in your ear and sound like doodoo. Now it's wireless for 159 dollars or lightning connection.
I'm on an iPhone forever plan so I'll get one but more upset that in my car I have a charger and aux and now can only one 1 or the other. Kind of lame.