I definitely feel that I am better at thinking when walking, but I also need to be looking at source code to get the details, otherwise I can only think about larger architecture.
When is this coming?
It's really a bit patronizing, as an adult without an AR headset I've obviously tried "just walking and reflecting".
We have plans to eventually release a proper AR headset also, though not on first iteration.
Here's me with a monocular. https://olin.monster/about.html The cable broke and the CF interface is outdated so I don't use it anymore. For me it might be best to get into an audio desktop or record my thoughts when walking as the background distracts as it moves like a sinus wave when walking. http://emacspeak.sourceforge.net/
Truly a sign of the passing of time.
Well, there's Nreal Light, with nice 1080p.
But it may not fit your face well. I use it without the nose piece, and with the temples down around the middle of my ears. The recurring "we didn't design it for you" China HMD fit problem. I've no idea if the EU release was identical. And some complain of its weight.
It's been variously available in Asia for years, more recently in the EU, but not yet in the US I believe (there was talk of maybe this year). In the US one has been able to ebay it from elsewhere, but US Customs duties have been highly varied and sometimes quite large.
[1] sunset silliness: https://twitter.com/mncharity/status/1397553615372529668