Stellaris' patch 3.9 is a product of the Custodian initiative, whose establishment saw the grand strategy game's development team split into two.
Stellaris Caelum Patch 3.9 Release Date
One half focuses on paid expansion content, while another hacks away at ensuing free patches release every 3 months or so.
This is useful when trying to determine the update's release date, even before Paradox announces it. The Gemini update went live in the first half of May 2023.
We expected the Caelum update 3.9 to arrive at some point in fall 2023 and the developer confirmed that to be the case.
In early September 2023, Stellaris 3.9 update's release date was narrowed down to the week of September 11, "if everything goes according to plan."
Everything did go according to plan, with the patch going live on September 12.
- Stellaris 3.9 update release date:September 12, 2023
This longer wait comes as a result of Paradox usually winding down for the summer, as employees go on holiday.
In terms of content, we can expect additional "changes to leader traits and some of the mechanics surrounding them," alongside tweaks to Species Packs and various additions that are detailed in the full patch notes linked above.
This is what you need to know about Stellaris' 3.9 Caelum update release date. For more on the title, check out some useful console commands and cheats alongside a brief look at how building the Quantum Catapult works.
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