JetBrains MPS 2026.2 EAP: New Features for Enhanced Development

JetBrains has launched the Early Access Program (EAP) for MPS 2026.2, introducing several updates aimed at improving the development experience. Key enhancements include more flexible test reporting, refined node selection, and a streamlined startup configuration aligned with the IntelliJ Platform. Editor tests now support customizable result matching, allowing developers to ignore irrelevant differences such as node order or attribute values. This reduces false test failures and provides more precise failure messages, pinpointing specific nodes and cells involved. Additionally, the Find Usages tool now groups results by virtual package, making it easier to navigate complex models. Multi-node selection has also been improved, with Select Up (Ctrl+Up) recognizing lists of nodes as meaningful units, simplifying tasks like copying and pasting groups of statements. The startup configuration has been updated to better integrate with the IntelliJ Platform, reducing manual maintenance and improving launcher resilience. These changes aim to enhance productivity and reduce friction in large-scale development projects.