The new iOS version update is coming next week. The most interesting new feature for existing homepod mini owners will be the temperature and humiliation metrics. Yes, you've paid for those extra sensor all the time until now it is becoming useful.
All you need to do is update all the devices connected to the Home to the latest xOS ( tvOS, iOS and homepod mini's firmware) to version 16.3. And then from the environment, you will see those new metrics.
