Where is the release note of Go Client?

I can see some official clients release notes for Es 9 on Relase notes page.
However , there is no Go Client.

Does this mean there's nothing to be concerned about when upgrading to version 9?
Or does it mean that Go Client is not yet an official client library?

Hello! Not all clients have their release notes in this section. I'm not sure if this will happen at some point, but in the meantime:

Thanks!
If there is the link to CHANGELOG.md, it would be helpful for users.