WEI - Google is speed-running the Web DRM in secret.

https://github.com/RupertBenWiser/wei-wpt-other

https://github.com/RupertBenWiser/wei-wpt

these showed up after Jul 21 per GitHub "contribution activity" but are retroactively dated to 13 - they were probably private before that.

We may not see that full implementation is already worked on.