Systemd 209 brought many bug-fixes, changes, a new network component, and other changes. Given the massive size of systemd 209, new updates have been expected to follow quick in order to address any uncovered bugs and other issues. Already we see the first sights of systemd 210 being readied for release and its multiple changes.
Systemd developers are already preparing for the 210 release per the Git activity. Systemd has a new AppArmorProfile unit file option, new matching support in systemd-networkd, logind improvements, and many other changes. Hit up that link for more details of the features and changes to be found in systemd 210 when it's announced in the very near future.