Fatshark Games have announced Vermintide 2 on Twitter today. In the teaser they announced that there will be a worldwide reveal on 17th October.
— Fatshark (@fatsharkgames) August 30, 2017
The tweet links to a Steam product page which gives the following descripton of the game,
‘Warhammer: Vermintide 2 is the sequel to the critically acclaimed Vermintide. It’s time for players to return to the memorable first-person co-op experience with intense world class melee action.
Set in the dark and grim Warhammer Fantasy world, you must join forces with up to three other players to tackle the endless hordes of enemies. Equipped with a variety of melee and ranged weapons, you and your team are all that stands between utter defeat and victory – and if you fall so will the Empire.’