> For the complete documentation index, see [llms.txt](https://cover-docs.diffblue.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cover-docs.diffblue.com/updates-and-upgrades/whats-new.md).

# What's new

Find out the major changes from our current and previous releases. For anything older, see the [release archive](/updates-and-upgrades/release-archive.md).

<table data-card-size="large" data-view="cards"><thead><tr><th></th><th></th><th></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><strong>2026-08-01</strong></td><td>This release publishes the Diffblue Cover CLI Docker images to the GitHub Container Registry (GHCR) and updates the plugin so that support for IntelliJ IDEA 2026.2 and later can be published to the JetBrains Marketplace.</td><td></td><td><a href="/pages/JMv5NhqFPuXwb5N4XFG7">/pages/JMv5NhqFPuXwb5N4XFG7</a></td></tr><tr><td><strong>2026-07-02</strong></td><td>This release resolves a plugin compatibility issue on IntelliJ IDEA 2026.2.</td><td></td><td><a href="/pages/XWvlQKUYuqO5eWK5hyN2">/pages/XWvlQKUYuqO5eWK5hyN2</a></td></tr><tr><td><strong>2026-07-01</strong></td><td>This release adds support for IntelliJ IDEA 2026.2 and deprecates distribution via Docker Hub.</td><td></td><td><a href="/pages/8zWkuz9zpWEmX5kte4J2">/pages/8zWkuz9zpWEmX5kte4J2</a></td></tr><tr><td><strong>2026-05-01</strong></td><td>This release introduces open-ended IntelliJ IDEA version support, so the plugin works with IntelliJ IDEA 2025.3 and all later versions, including future releases, from a single artifact.</td><td></td><td><a href="/pages/jYNXINB5np2IojL3eluL">/pages/jYNXINB5np2IojL3eluL</a></td></tr><tr><td><strong>2026-04-01</strong></td><td>This release adds support for IntelliJ IDEA 2026.1 and removes support for 2025.2.</td><td></td><td><a href="/pages/iGbbMXbMZKI3pnhekxWC">/pages/iGbbMXbMZKI3pnhekxWC</a></td></tr><tr><td><strong>2026-02-02</strong></td><td>This release introduces support for Java 25 projects and enhances the CLI to detect when generated tests fail project style checks, such as Apache Checkstyle.</td><td></td><td><a href="/pages/lm3ybFayicED2In2VqZ3">/pages/lm3ybFayicED2In2VqZ3</a></td></tr><tr><td><strong>2026-02-01</strong></td><td>This release introduces a new merge mode (`--merge`) that integrates generated tests directly into existing test files, and adds support for Spring 7 and Spring Boot 4.</td><td></td><td><a href="/pages/AQFf4CSd5wo8XLOKA74a">/pages/AQFf4CSd5wo8XLOKA74a</a></td></tr><tr><td><strong>2026-01-01</strong></td><td>This release introduces the `@WriteTestsTo` annotation for precise control over test class naming and adds support for Mockito 5.21.0. It also resolves build issues for Gradle 9.x composite projects and simplifies partial test configuration.</td><td></td><td><a href="/pages/dlP8JmWBoAmlpl6F41CN">/pages/dlP8JmWBoAmlpl6F41CN</a></td></tr><tr><td><strong>2025-12-02</strong></td><td>This release adds support for IntelliJ IDEA 2025.3 and enhances the Diffblue Cover CLI workflow with improved JaCoCo coverage guidance, earlier reporting during preflight checks, and clearer issue analysis. This release also resolves test generation issues involving conflicting Spring annotations and Java 17 syntax.</td><td></td><td><a href="/pages/6FsBy4YlKEPaK9J5L4ZK">/pages/6FsBy4YlKEPaK9J5L4ZK</a></td></tr><tr><td><strong>2025-12-01</strong></td><td>This release writes more efficient test suites by default for both the CLI and IntelliJ plugin, enhances the `dcover issues` command, and introduces an opt-in caching mechanism to improve CLI performance.</td><td></td><td><a href="/pages/v89t4Dz5mfm6DLCoIVHn">/pages/v89t4Dz5mfm6DLCoIVHn</a></td></tr></tbody></table>