From Press Release:
Finn, everyone’s fan favorite stormtrooper-turned-hero, is coming soon to Star Wars Battlefront II. See him and The First Order’s Captain Phasma in action in this new trailer highlighting Star Wars Battlefront II The Last Jedi Season content.
On December 13th, play as these two new heroes in multiplayer, and battle it out in new locations from Star Wars: The Last Jedi including Crait and D’Qar, with new vehicles, challenges and more.
In single player, Iden Versio returns in Star Wars Battlefront II Resurrection. All of this content is coming for free as part of the first season of Star Wars Battlefront II.