Developer: What is the proper way to name MQTT devices now?

[Dujith (Charles Evers)]

PSA: MQTT Name changes in 2023.8

Everyone, there will be MQTT name changes in the next release of the software. There is nothing to worry about, your names are safe. However the change caused addons like Z2M (and other MQTT integrations) to update their discovery information. As it stands, Z2M will not be able to release a version with this fix until September 2023. During that time a warning will be in your logs indicating that there is an issue. You can safely ignore this warning. As of this writing, there may also be a…

Expansive thread on this. The first post also has links about all of this.