Blizzard just said:
THE WORLDS OF WORLD OF WARCRAFT
On April 19, the World of Warcraft development team will reveal the next expansion. We’re excited to show you what we’ve been working on and where your adventures in Azeroth will go next.
Until then, we hope you are enjoying Eternity’s End, the newest content update and final chapter of the Shadowlands saga. The heroes of Azeroth have been called forth to this intriguing new land of Zereth Mortis to thwart the Jailer’s efforts and stop him from rewriting reality as we know it. This past week we have seen brave adventurers make their way into the Sepulcher of the First Ones raid zone on Normal and Heroic difficulty, and this week they will finally come face-to-face with the Jailer himself as Raid Finder and Mythic difficulties become available. I’m eager to see who will achieve world first!
In WoW Classic, players have gathered their strongest allies to go beyond the gates of the ancient troll city of Zul’Gurub, face the Blood God Hakkar, and reap the rewards in Season of Mastery. Players have also been taking on the challenges in Burning Crusade Classic Phase 3 as they make their way into the Black Temple to face Illidan within his stronghold, engage in the Battle for Mount Hyjal to preserve history, and much more.