Update v0.20.md

docs/changelogs/v0.20.md

@@ -102,6 +102,11 @@ To learn more, see [tracing docs](https://github.com/ipfs/boxo/blob/main/docs/tr
     To support our efforts, please leave a comment describing your use case in
     [ipfs/specs#375](https://github.com/ipfs/specs/issues/375).
 
+#### `--empty-repo` is now the default
+
+When creating a repository with `ipfs init`, `--empty-repo=true` is now the default. This means
+that your repository will be empty by default instead of containing the introduction files.
+You can read more about the rationale behind this decision on the [tracking issue](https://github.com/ipfs/kubo/issues/9757).
 
 ### 📝 Changelog