My own setup for a while now, when playing music for long periods, has been to connect the phone to charge using the lightning cable, and then connect to a (wireless) Bluetooth speaker which itself is also plugged in and charging using its own USB cable connected to a USB charger. It has much the same effect as having a "charging dock", but just requires two powered USB ports rather than a custom piece of equipment.
This setup is becoming more and more similar. My own system is my iPhone just plugged into whatever Lightning cable I want (laptop, bedside left, bedside right), with either Bluetooth or Spotify Connect to the Amazon Echo on my shelf.
This is the wireless future they're talking about. We shouldn't have to have a device to charge and listen through at the same time. We should charge wired and listen "wirelessly" (even if the audio device is wired for power).