The announcement doesn't make this very clear, but I think this talks to the Codex CLI, not the Codex App? (Or possibly both)
For now it appears that it talks only to the Codex App. Some users in this thread are saying that apparently the Codex CLI will support it on the next official release.
For now it appears that it talks only to the Codex App. Some users in this thread are saying that apparently the Codex CLI will support it on the next official release.