> > freebsd-update doesn't support development branches, you have to go
> > from security branch to security branch.
> I know it can't be used to update to stable, but I've not encountered
> any thing in the documentation saying it can't be used to update from
> stable it to a release.
From the man page:
"... the FreeBSD Security Team only builds updates for releases shipped
in binary form by the FreeBSD Release Engineering Team"