Minecraft Dungeons

Minecraft: Dungeons is an upcoming action/adventure role-playing video game developed by Mojang AB. It is slated for a 2019 release for PC.

Gameplay
The game supports up to four players and features various new weapons, items, and mobs, as well as a variety of environments to explore and an overarching quest that'll see players face off against an enemy called the Arch-Illager. The game has specific quests and locations, along with procedurally generated elements. The player is not restricted to one class, and can pick up more armor or weapons and use them. Players will not build or mine because the game is focused on action/adventure. The game will take place both above ground and below. Players can re-play levels they have beaten. There is "Something similar to a hub world". Levels are procedurally generated, and Mojang is considering World Seeds. The 'key' (picture in gallery) will apparently run away from the player when they get near, and they will have to hit it a few times before you can pick it up.

Development
The game was announced at MINECON Earth 2018. It appears as a visually enhanced version of the base Minecraft game, but has a different gameplay style.