From <https://docs.freebsd.org/en/books/faq/#stable>: > … 12.3 is the latest release from the 12-STABLE branch; … > 13.1 is the latest release from the 13-STABLE branch; …
<https://cgit.freebsd.org/doc/commit/?id=5ab16dfdedb053e126d7d175c6d3b94aa2bca286> Through FAQ rewrite, this is not an issue anymore. We can close this report.