Bluetooth 6.0 has been announced ... but distance detection seems like the most impactful part of the upgrade. When it might start to be implemented in actual hardware is anyone's guess, though.

But they don’t have to. As [Dan Gebhardt] shows in his recent hack, integrating a Bluetooth audio receiver into portable radio may be easier than you think. For this project, [Dan] wanted to ...

An incremental upgrade, Version 5.3 adds more stability ... and devices can be both client and hub at the same time, enabling Bluetooth devices to communicate with each other.