On the backend we have been using YAML for a long time, but on the frontend, we still used JSON for a lot of things. JSON is harder to write than YAML so we have aligned that. All data inputs on the frontend now accept YAML. You can still use JSON, as JSON is valid YAML.
https://www.home-assistant.io/blog/2019/10/10/release-100/#goodbye-json-
On the backend we have been using YAML for a long time, but on the frontend, we still used JSON for a lot of things. JSON is harder to write than YAML so we have aligned that. All data inputs on the frontend now accept YAML. You can still use JSON, as JSON is valid YAML.
This includes: