One of the few things lacking in the previous game will get a major emphasis in the next one as Start Wars Battlefront II will feature a single player campaign from the Empire side of things. You'll be taking on the role of Commander Iden Versio after the Emperor falls.
Now, will Iden come to the Rebellion side of things or will the story stay rooted in the Empire side, that's to be determined. What we do know is this story is cannon and it looks like not only Luke will show up, but Maz Kanata from The Force Awakens will as well.
Star Wars Battlefront II arrives on November 17th, 2017.