Rebellion's just announced a mini-campaign for Sniper Elite 4.
Deathstorm Part 1: Inception comes out on 21st March on PC, PlayStation 4 and Xbox One. It's the opening chapter and mission in a three-part campaign, playable from start to finish for one or two players. It's set after the events of the main game, with the first chapter taking place in the colder terrain of northern Italy. There, a Nazi naval base was recently the target of a bombing run.
Here's the official blurb:
Part two of Inception is due out late April. Part three is out May or June.
Meanwhile, also out on 21st March is the Night Fighter Expansion Pack, which includes three new weapons, night-time camo rifle skins for eight weapons and new male and female character skins.
Multiplayer also gets a brand new Elimination mode for free. Here's the blurb:
And finally, there's a free multiplayer map called Night Woods. As Rebellion as said, all additional multiplayer maps and modes for Sniper Elite 4 are free.