USCIS announced re-registration for Syrians who currently hold Temporary Protected Status. TPS will be extended for Syrians until September 30, 2016.
For more information on TPS for Syrians, you can view the USCIS website: http://www.uscis.gov/humanitarian/temporary-protected-status-deferred-enforced-departure/tps-designated-country-syria/temporary-protected-status-designated-country-syria