I want to use Opus for up to 16 channels for Third order Ambisonics.
Release notes mentioning 8 channel support for ambisonics.
https://people.xiph.org/~jm/opus/opus-1.3/ is now released with Specific Ambisonic support.
It is already in latest Firefox, and I want to use it for omnitone playback with headtracking and binaural conversion of ambisonic local files.