It is buried in yesterday's release notes.

They have "highlight" links to "Remote control" and "Codebase search", but not to "Copilot added as a Git co-author by default" which is right between the two. Something, that alters how commits work, and if you skip the Remote Control section, you won't see it.

They knew what they were doing. This is like "Sent from an iPhone" levels of nuisance default advertising.