Blizzard has announced the Cataclysm expansion for Hearthstone, set to launch on March 17, 2026, featuring the return of Colossals and new mechanics inspired by World of Warcraft. The company clarified there will be no Hearthstone sequel at BlizzCon 2026, but teased a major update instead. Executives also discussed potential console ports under Microsoft ownership, though none are imminent.
Blizzard unveiled details of the upcoming Hearthstone expansion, Cataclysm, during a Spotlight presentation on February 9, 2026. The expansion reimagines World of Warcraft's Cataclysm era, with Deathwing invading from an alternate timeline alongside powerful Lieutenants like Ragnaros and Al’Akir. It introduces 135 new collectible cards, including the first Deathwing Hero card, the return of Colossals—massive minions that fill the board, such as Magmaw the lava worm with 99 recharges—and new keywords like Herald and Shatter, plus abilities like Rewind to redo plays.
Starting March 10, all cards from the Un'Goro and Emerald Dream expansions will be free for players during the Cataclysm cycle. Pre-purchase bundles are available now, and logging in grants the free Warmaster Blackhorn Legendary card. Community events from February 9 to March 17 include Rally the Dragonflights for rewards like Legendary Ebyssian, and in-game waves against Lieutenants offering packs, epic cards, and hero skins.
In interviews at Blizzard's Irvine campus, executive producer Nathan Lyons-Smith and game director Tyler Bielman addressed rumors. Lyons-Smith stated, "No, this is not a Hearthstone 2," emphasizing the BlizzCon 2026 announcement will feature familiar content like new modes in a "bigger way than we would normally do." On physical cards, Bielman noted digital elements like unique mechanics can't be replicated, saying the team values "things that we do, mechanically, that you can’t do on a tabletop."
Regarding consoles, Switch, or Steam Deck, Lyons-Smith highlighted the 16-year-old codebase and UI challenges but noted Microsoft's influence: "Certainly we have a different owner now than we did three years ago and they're more invested in Xbox and 'anything's an Xbox'." No ports are in development, but the priority has increased. Patch 34.6 launched today with balance changes to underplayed cards and Battlegrounds updates, including hero redesigns and anomalies.
