Oh cool, the Bluetooth 5.1 specification is out. Nice. *control-F* master-slave... 2,000 results

Can't let go of that old terminology we see. Plus, it now tells you where a nearby device is located

Version 5.1 of the Bluetooth wireless networking specification debuted recently, bringing with it the ability to identify the direction of a transmitting Bluetooth device from a receiving antenna - and divisive technical jargon."