Each release of FreeBSD is the end result of periodic special attention – release engineering – to a releng
branch of the code for the OS.
With the five-year support model, two or more major versions may be supported at any one time.
Major versions 13 and 14 are supported.
13 has:
stable/13
branchreleng/13.2
and releng/13.3
branches.14 has:
stable/14
branchreleng/14.0
branch.FreeBSD 14.0-RELEASE is recommended for new installations.
Adapted from the timelines at https://codeberg.org/FreeBSD/freebsd-src/src/commit/96c567f972e05c47cd239b6c9226354e808f039b/share/misc/bsd-family-tree#L417-L462:
| | | | | FreeBSD | | 11.4 | | | FreeBSD | 12.2 | | | `------. | | *--FreeBSD | | 13.0 | | | | | | FreeBSD | | 12.3 | | | | FreeBSD | | 13.1 | | | | | | FreeBSD | | 12.4 | | | FreeBSD | 13.2 | | | `------. | | *--FreeBSD | | 14.0 | | | | FreeBSD | 13.3 | FreeBSD 15.0-CURRENT
Errata notices and security advisories: