It's not the age of the tech, it's the amount of space it takes up. Getting rid of the 3.5mm jack gives them 3 or so square cm on a preciously tiny motherboard.

It's not the age of the tech, it's the amount of space it takes up. Getting rid of the 3.5mm jack gives them 3 or so square cm on a preciously tiny motherboard. They can use this space for more battery or components on the mobo. One less port also means one less place water can get in. These are things Apple pursues relentlessly.