This release offers better systemd integration as well as better support for chrooted environments by supporting better timestamps in these environments. It also contains a number of important bug fixes.
Upgrading to this release is strongly recommended for users of the v5-devel branch.
Remeber that v5-devel receives mostly minor and/or very urgent improvements. The "real" development takes place in v6, which already offers features not found in v5.
As always, feedback is appreciated.