AirPlay 2 speakers are currently supported by iPhone and iPad. A new Macotakara report says that for the next iPhone, Apple is adding dual Bluetooth audio support.
Dual Bluetooth output might allow two people to listen to music from the same phone, connecting two sets of AirPods at the same time.
The iPhone software currently only supports connecting to one device in one audio profile at a time.
Multiple headphones can be paired, but the sound can only ever come from one set. The iPhone already supports multiple connections of various types, such as connecting to headphones and the Apple Watch at the same time.
Some Android devices already support dual Bluetooth Audio.
Dual Bluetooth Audio could be a cool way to listen to the same thing together for you and a friend, pairing two AirPods sets at once.