https://www.polygon.com/2018/10/24/18018360/battlefield-5-battle-royale-firestorm-release-date-dlc-tides-of-war

Electronic Arts and developer EA DICE have laid out the post-launch timeline for Battlefield 5, and it includes at least one major surprise: The game’s battle royale mode, Firestorm, won’t launch until 2019.

The mode’s release window starts in March, according to the timeline image in a new blog post, with no further specifics given on the timing.