Will audio quality get better?
"Will audio quality get better? By abolishing analogue there’s now a clearer digital path to your ear, and the phones get smaller."
Is that ironic, because BT or other digital connection adds re-encoding of the original digital content, which has to be unpacked. The "digital" earphones can easily have a lower quality decoder, DAC and audio amp than is possible on the phone motherboard. Re-encoding from one digital format to another ALWAYS reduces the quality unless it's a totally lossless format. You simply can't have the same quality and power level of analogue signal inside a wireless ear bud as 50 cents worth of electronics inside the phone. What part of the fact that Earphones and Loudspeakers need analogue* do people not understand?
YOU STILL HAVE TO HAVE ANALOGUE TO DRIVE THE EARPHONE COILS!
This is daft. The only advantage whatsoever of ditching an analogue jack is to Apple. You'd be lucky to have as as good quality and will have poor choice of earphones / headsets and have to spend money to connect it to a HiFi as an MP3 player.
The Apple justification of this is simply lies. It's a disgrace and a huge backward step. I'd bet if they could prevent 3rd party earphones working, they would. It's immoral.
[*A nasty trick of low power electronics is to use Pulse Width Modulation, variations of Class D, on/off to drive the moving coil of an earphone or speaker. Apart from the risk of radio interference, it's hard to get the distortion and resolution as good as decent DAC followed by filter and linear audio amp.]