Recently new DLC called The War Machine has been announced. Now you can see all of the additions in action:
 

The 2nd DLC pack is coming soon! It includes 3 multiplayer maps, 1 war mode mission and 1 nazi zombies chapter. This time they didn't release any trailer, but maybe it will appear in near future. For now, let's look at the content.
 
 
Maps:
Egypt As name mentioned, it takes place in Egypt in the absolutely beautiful environment.
 

Dunkirk This map takes place in France by the sea-side of the town.
 

V2 Takes place in Germany and represents a rocket development facility.
 

 
 
War Mode mission:
Operation Husky This mission will be performed during the invasion of Sicily. The gameplay also includes aerial dogfighting.
 


Nazi Zombies chapter
The Shadowed Throne Players will continue their journey in the burning Berlin.
 


Call of Duty: WWII - The War Machine DLC comes out on April 10 (first on PS4).
 
Information was taken from official announcement: https://community.callofduty.com/t5/Call-of-Duty-WWII-Blog/Prepare-yourself-for-Call-of-Duty-WWII-The-War-Machine-the/ba-p/10696694