🛠️ Hearts of Iron IV update history
Official announcements the developer posts on Steam—patches, new content, and events—sorted by date. Click a title to read the full post.
September 2026
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9/17Thu🛠️ Patch / update v1.19.3HOI IV | Patch 1.19.3
Generals! With the weather becoming more gloomy and the summer on its way out, we bring the last “Summer” release. This will be the last patch that specifically targets Thunder at our Gates and brings…
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9/4Fri🛠️ Patch / updateStudio Gold Update | September 2026
Hello Generals, Admirals and Air Chief Marshals! Swedish summer is over, and we were blessed as it lasted a good 5 weeks. We’d already started work on the 1.19.3 patch before, and we’ve been at work p…
August 2026
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8/28Fri🛠️ Patch / update v3.03HOI IV | Open Beta SE™ Update 3.03
Generals! Hello, I’m Zwirbaum, Game Designer for Hearts of Iron, and I want to welcome you to yet another Open Beta SE™ (Not really trademarked) Update for Hearts of Iron IV. This week I am bringing m…
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8/12Wed🛠️ Patch / update v2HOI IV | Open Beta SE™ Update 2
Generals! Hello, I’m Pdxen, Tech Lead for Hearts of Iron and I want to welcome you to the second update of the Summer Open Beta. In this update we are changing the topic from balancing to updating the…
Source: official Steam announcements (updated every 6–24 hours). Titles and summaries are copyright of the original developers.