The repo has implementing an esp32 standalone MQTT audio streamer. Is is desinged to work as a satellite for Rhasspy (https://rhasspy.readthedocs.io/en/latest/). It supports multiple devices
Additional topics for Snips, handling streaming (incoming) audio
This is the first release, although already version 4.4 The version can handle audio messages other than 44100 stereo and resamples on the fly.
I thought that to be a good milestone for a release