Today, the @BFBulletin Twitter account posted that a German Battlefield Community Manager hinted that the Battlefield 1 Open Beta will start sometime after GamesCom. GamesCom is from August 18-21. So it's possible that the open beta will start in late August or most likely in September.
According to a #BF1 German CM, the open beta starts shortly after GamesCom. Via @II_JumPeR_I https://t.co/5zfIJybPBv pic.twitter.com/uGCh7qrjL7— Battlefield Bulletin (@BFBulletin) July 13, 2016