The latest major update for Stellaris is version 4.0, known as the “Phoenix” update, which was released on May 5, 2025, alongside the BioGenesis expansion. Reddit+3Paradox Interactive+3PCGamesN+3
Key Features of Stellaris 4.0 “Phoenix” Update
- Pop Groups & Workforce System: Individual Pops are now grouped by species, strata, and ethics into Pop Groups, which generate Workforce to fill jobs. This overhaul aims to enhance late-game performance and streamline population management. Reddit+1Paradox Interactive+1
- Trade System Overhaul: The previous Trade Routes mechanic has been replaced. Trade is now a stockpiled resource representing logistical efforts, affecting planetary deficits and military fleet operations. Paradox Interactive
- Species Modification Enhancements: With technologies like Gene Tailoring or the Integrated Anatomy tradition, players can set default templates for species. Subspecies with the “Integrate Into Default Sub-Species” right will gradually conform to the default template over time. Paradox Interactive
- User Interface Improvements: Numerous events and notifications have been streamlined into less intrusive formats like toasts and notifications, improving the overall user experience. Stellaris Wiki
- Achievements Accessibility: Most achievements are now attainable without Ironman mode, provided the game checksum remains unmodified and no debug commands are used. Stellaris Wiki
- Additional Features: Transport ships can now utilize cloaking technology, and various UI elements, including the starbase interface, have been refined for better clarity and usability. Stellaris Wiki
For a visual overview of the Stellaris 4.0 “Phoenix” update, you can watch the following feature highlight video:
