Will LEGO Batman: Legacy of the Dark Knight have DLC?
Yes — three confirmed DLC packs ship with the Deluxe Edition: Arkham Trilogy, Batman Beyond and Party Music. Each adds 7 suits (one per hero).
Three DLC packs are confirmed: the Arkham Trilogy Pack, the Batman Beyond Pack, and the Party Music Pack. Each adds 1 themed suit per playable character, for 21 new suits total. All three are bundled with the Deluxe Edition; they can also be purchased separately. WB has not announced post-launch story expansions or new playable characters as DLC at this time.