The Death Star DLC introduced a new multi-stage game mode to Star Wars Battlefront. Rogue One: Scarif will do the same.
The fourth and final Battlefront DLC delivers one new game mode called Infiltration. Infiltration is a three-phased mode in which the Rebel forces must first breach the shield surrounding the planet by escorting a U-wing to the Shield Gate.
After that's taken place, the Rebels will need to create a diversion by blowing up an Imperial cargo ship. After that objective is complete, the Rebel side will need to steal the Imperial secrets and escape.
Rogue One: Scarif's new mode is a lot like Death Star's Battle Station though Infiltration is more focused on ground combat. To get a feel for the new game mode, take a look at the video above.