Does anyone know if aptX support has arrived in the iPhone for bluetooth devices? I have been increasingly using devices like the Sony SBH80, or SBH54 and they work seamlessly for the most part already between my phone and laptop. I don't think the headphone thing has been thought thru but their wireless jump to the W1 seems to be at least in part bluetooth 4.x based which itself is a far superior technology to even BT 3.0 that many devices today have.

The other problem I've run into is having a phone and headset with the same version of bluetooth.

Bluetooth audio, once high quality enough through codecs like aptX will become like wifi, we will wonder why we were tethered with wires to begin with. Bluetooth 5.0 appears to have taken a big step towards the audio quality issue resolution. I've previously owned the Sony MW600 and SBH52 bluetooth receivers for the past 5-7 years. As the tech improves it's going to become more viable and is in line with Apple's generally wireless strategy between Macbook, iPad, iPhone, etc.