What’s New in IntelliJ IDEA 2025.3? 800+ Fixes and a Unified Release

IntelliJ IDEA 2025.3 – Technical Highlights

Unified Distribution

Community and Ultimate editions are merged into a single distribution, reducing the installer size by roughly 30 % compared with the previous Ultimate‑only package.

Only one build pipeline is required, eliminating the need for separate testing and release cycles for different editions.

Resource allocation is centralized, allowing the team to focus on overall quality and stability.

The long‑standing bug where the IDE could not be uninstalled after a failed update is fixed.

Development Experience Improvements

Spurious warnings about incomplete indexing have been removed; the IDE no longer blocks work while the index is still building.

The background process formerly called “Indexing” is now labeled “Analyzing project” to better reflect its purpose.

Find Usages now displays results with relative file paths, making navigation more intuitive.

Accessibility support has been expanded, including better screen‑reader compatibility.

A new “Islands” UI theme improves tab readability and visual contrast.

Spring Framework Support

Full support for Spring Framework 7 and Spring Boot 4 is provided, including:

Recognition, validation and navigation for the new API versioning mechanisms.

Integrated HTTP client assistance for Spring‑based REST endpoints.

Dynamic bean registration via BeanRegistrar with code‑completion and navigation.

JSpecify null‑safety annotations are understood and highlighted throughout the codebase.

Language Ecosystem Enhancements

Java 25 : complete tool‑chain support, runtime compatibility checks, and inspector bug‑fixes.

Kotlin : improved Spring‑related libraries, and migration assistance toward the new K2 compiler backend.

Scala : structural search & replace, UI performance optimizations, and an option to disable built‑in inspections for large projects.

GitHub / GitLab Integration

Files opened in the editor are no longer automatically marked as “reviewed”.

Multi‑line pull‑request comments now have a full‑featured UI, supporting editing, replying, and thread navigation.

Terminal and Build‑Tool Optimizations

A new terminal implementation is enabled by default in PowerShell on Windows, delivering faster rendering and reduced latency.

Maven and Gradle builds for Micronaut and Spring projects are more stable, with fewer background freezes.

The Dependency Analyzer UI has been streamlined for quicker navigation of module dependencies.

Web Development Enhancements for Large Monorepos

Improvements target TypeScript/JavaScript projects that use extensive monorepo structures:

Full support for customConditions in tsconfig.json.

Recognition of exports entries with a development condition in package.json.

Correct resolution of TypeScript project references across package boundaries.

No forced conversion of .mts files to .mjs during compilation.

A unified JavaScript Runtime settings page now controls Node.js, Bun, and Deno configurations.

Performance Optimizations

Overall UI responsiveness is increased, reducing lag when opening large projects.

TypeScript syntax highlighting and code analysis are significantly faster.

HTTP client and code‑navigation latency issues have been resolved.

General stability improvements make operations on very large codebases smoother.