From his Twitter:
If the #BATTLEFIELD trailer was delayed, this is probably why.
DO NOT CONTINUE READIND TO AVOID SPOILERS.
The rocket in the trailer does explode and falls down and kills soldiers, so releasing the trailer (if a disaster happens) could be a bad move.
I know he uses a boss digital delay but I’m not sure if he uses a dd-6 or did-7 or maybe something else. Any help would be appreciated