GSC Game World has confirmed that STALKER 2's paid story expansion, Cost of Hope, will launch on 20th August alongside the free Update 2.0. The expansion sends players into the Chornobyl Nuclear Power Plant for the first time since 2008's STALKER: Clear Sky, set against a bitter falling-out between the game's rival Freedom and Duty factions, while Update 2.0 shifts the base game onto a newer, more stable version of Unreal Engine 5. The pairing matters because it delivers substantial new story content alongside a significant technical overhaul for a game whose rocky 2024 launch has been steadily patched up over the past year and a half.

Cost of Hope, first announced in March, introduces new threats including an armoured humanoid "berserker" mutant, and its August release keeps GSC within the Summer 2026 window it originally promised. Update 2.0 will move the game from Unreal Engine 5.1 to 5.5, a change GSC says should improve performance, lighting and visual stability, alongside rumoured further tweaks to the A-Life ambient NPC system; it remains free for all owners of the base game.