The introduction section of
mentions 12.1-release as a snapshot, rather than a release. I compared this with
to decide this is a documentation bug.
A commit references this bug:
Date: Wed Nov 6 15:58:23 UTC 2019
New revision: 53558
Fix the release.type macro.
Submitted by: Andras Farkas
Sponsored by: Rubicon Communications, LLC (netgate.com)
Fixed. Thank you for the report.