The Xbox One store has updated their description for the Black Ops 3 Season Pass (DLC). Re-imagined maps from classic Call of Duty: World at War will be appearing. Will this be one DLC focusing on WAW or maybe one map per DLC? I am sure we will find out soon enough.
The Call of Duty®: Black Ops III Season Pass delivers 4 epic DLC map packs in 2016 with all-new multiplayer content, including re-imagined fan-favorite maps from Call of Duty®: World at War and the Call of Duty®: Black Ops series, plus thrilling Treyarch Zombies content, all for one great price.
Source: Xbox One