The newest expansion will follow up on the events of The War Within, with antagonist Xal'atath taking the fight right up to the Sunwell.
"To be fully transparent, there's no reason for us to hide anything about this," said senior game director Ion Hazzikostas.
The story of the second expansion of the trilogy will kick things off with Blood Elves defending their homeland against the Void.
Invincible VS, Dying Light: The Beast, Cronos: The New Dawn, Metal Gear Solid Delta: Snake Eater, and much more will also appear.
The next major expansion for World of Warcraft, Midnight, will be the second in a planned trilogy that kicked off last year.
Franchise general manager John Hight confirms World of Warcraft will continue to receive expansions after the Worldsoul Saga.
World of Warcraft: The War Within will feature a new continent to explore, a new Allied race, and new Hero Talents along with a level cap raise of up to 80.