You can use this repo to identify changes in `gcloud` releases.
For example, compare [`374.0.0` and `375.0.0`](https://github.com/imjasonh/gcloud-help/compare/374.0.0..375.0.0) (looks like lots of help text formatting...).
GitHub also provides an undocumented RSS feed feature, which even lets you filter changes in certain paths.
For example, you can subscribe to [changes to the `gcloud builds` surface](https://github.com/imjasonh/gcloud-help/commits/main.atom?path=gcloud/builds) in your RSS reader of choice.