I think when Apple talks about the reasoning for removing the headphone jack, it will mainly be for waterproofing reasons. Samsung's implementation of "waterproof" smart devices has been hit or miss (i.e. half-baked)...
http://www.itechpost.com/articles/2...proof-test-phone-declared-more-vulnerable.htm
Apple won't talk about why they removed the 3.5 Jack. That's not how Apple operates. They certainly will touch base on the waterproofing and Bluetooth features.