
Hearts of Iron IV HOI IV - Open Beta SE Update 1 Notes (13th July 2026)
Paradox's first Open Beta SE update for Hearts of Iron IV softens the doctrine system's rigidity whilst reining in overpowered tank variants and artillery.
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Paradox's first Open Beta SE update for Hearts of Iron IV softens the doctrine system's rigidity whilst reining in overpowered tank variants and artillery.

The last patch before summer brings balance tweaks and critical stability fixes to Hearts of Iron IV.

Paradox is running 1.19.2 as an open beta weekend to catch bugs before the full release. Expect balance tuning for the Pacific theater and fixes to some long-standing issues.

The latest patch tackles mod compatibility and gameplay exploits while rebalancing Pacific theater nations.

Patch 1.19.1 tackles mod compatibility and an exploit that was breaking the game for modders. New balance tweaks for Pacific theater nations.

A small but necessary hotfix addresses a critical crash tied to the new Army HQ feature and fixes the TaoG DLC menu icon.

Thunder at our Gates brings new focus trees, Army HQs, and a major balance overhaul to Hearts of Iron IV's Pacific theater.

The final planned open beta update before HOI IV's Anniversary Patch lands on June 6th, bringing naval AI improvements, Nationalist China rebalancing, and a stack of bugfixes.

Paradox ships what it's calling the last planned patch focused on Peace For Our Time, with Czechoslovakia balance overhauls and two crash fixes leading the way.
Paradox drops Open Beta Update V for Hearts of Iron IV before heading on a short break, bringing AI naval reworks and a fix for 1000-ship performance tanks.

Open Beta Update IV lands with a major naval AI overhaul, submarine rebalancing, and a preview of what's coming in the anniversary patch.

The first post-launch patch for Peace for Our Time is here, cleaning up Czech and Slovak bugs and adding three new focus tree entries.

Patch 1.18 lands today with sweeping AI overhauls, submarine detection reworks, and a mountain of bug fixes, here's what changed.
Open Beta III brings sweeping naval rebalancing to Hearts of Iron IV, with fuel costs, engine prices, and submarine visibility all getting a significant pass.

Hearts of Iron IV's Open Beta skips a week, with Game Designer Zwirbaum confirming no client update today and a return to the regular schedule next week.

Paradox has dropped a small hotfix for Hearts of Iron IV's Warships of the Pacific update, targeting two visual bugs that slipped through in 1.17.