The MPS 2026.1 Early Access Program Has Started | The MPS Blog

The MPS 2026.1 Early Access Program (EAP) has begun, offering an updated build that includes various enhancements and bug fixes. Key improvements involve the transition to the IntelliJ Platform 2026.1, JDK 25, and Kotlin 2.3, alongside restored KLib-based Kotlin stubs support. The EAP now features advanced natural language checking for proper capitalization in string values, the ability to split binary operations across multiple lines, and a new read-only-inspector style for editor cells. Build Language has been refined to handle transitive dependencies more efficiently, while the migration process benefits from more reliable dependency tracking. Java stubs have been significantly improved, addressing long-standing issues with BaseLanguage stubs for imported Java files. The project lifecycle has been modernized with a new mechanism for managing MPSProject activities, and Wayland is now the default display protocol on Linux systems, enhancing integration and stability. The EAP build aims to improve the overall user experience and maintain compatibility across different environments.