https://steamdb.info/app/471210/subs/
https://steamdb.info/sub/124164/ExpiryTime August 29, 2016 17:00:00 UTC (1472490000) 4 days from now
FreeWeekend Yes
StartTime August 25, 2016 17:00:00 UTC (1472144400) 3 minutes from now
EDIT:
Free Beta ;-)