In a bit of a surprise, the Igalia team announced this week that they have the fully open source WebXR implementation in the embeddable WebKit library (WPE) running on Android. They used this to replace the Gecko engine in a build of Mozilla's Firefox Reality immersive browser as demonstrated in a video in this blog post. Is there a future for Firefox Reality without Mozilla?!
Also this week, Igalia engineer (and Ex-Mozillian) Imanol Fernandez detailed the work behind their WebXR implementation in an internal codecamp talk.
Construct Arcade continues to improve their stable of games. On Wednesday they announced that Archery Training has multiplayer support which you can see in action. Sadly, they have made no announcements about whether we can shoot apples off of each others' heads.
After months of development news, Sense of Space launched Sense XR, their no-code platform for editing and web publishing of volumetric captures. They tout their adaptive streaming technology for its ability to work across many hardware devices and browsers. There is a free tier designed for testing and production prices start at US$250/month.