Got this info from GameSpot.
- December 21: The new Custom Game "Blind Delivery" goes live. Tackle this unique take on the War Pigeons mode where the minimap is turned off and only handguns and explosives are allowed.
- December 22: The "Holiday Truce" Dog Tag will be awarded to all players starting December 22 (one per account.) All you need to do is login to Battlefield 1 after this date and this iconic Dog Tag will be yours.
- December 22: Vehicle Skins are introduced to Battlefield 1. In the new Battlepacks revision you might get hold of two Heavy Tank skins: the Distinguished "SchnucK" or the Legendary "Desert Gold."
- December 23 – December 29: All players that login to Battlefield 1 during this period will receive a free Battlepack (one per account.)
- December 23 – December 29: All Battlefield 1 Premium Pass owners that login between December 23 and December 29 will receive two Superior Battlepacks.