October 2025 (google/kotlin) focused on strengthening build integrity, API stability, and performance of the Kotlin Gradle integration. Delivered three key features with targeted improvements: Gradle build diagnostics to warn on testApi usage with a refactor to improve dependency management; API deprecation enforcement elevating deprecated constructors to errors; and a performance-oriented optimization of commonizeCInterop task registration with reduced logging. These changes reduce risk of breakages for downstream users, cut CI noise, and improve maintainability.

September 2025 – google/kotlin: Focused on API hygiene and stability with two maintenance-driven changes to the Kotlin Gradle plugin. Removed an unnecessary deprecation suppression annotation and deprecated KotlinTopLevelExtension.project with an ERROR-level deprecation and planned removal to prevent recursive self-reference. These changes reduce deprecated API surface, prevent misuses, and lay groundwork for future removal, contributing to safer builds and clearer upgrade paths for users.

Concise monthly summary for 2025-08 focusing on Windows compatibility for Kotlin Gradle Plugin (KGP) integration tests. The work shipped in google/kotlin improves cross-platform test reliability and CI throughput, enabling tests to run on Windows VMs and reducing environment-specific failures. The change is captured in commit 70d747fe8b172b8682321e2288082a0a1c98313b.

July 2025: Focused on deprecation hygiene, web-targeting enhancements, testing reliability, and tooling/documentation improvements across google/kotlin and JetBrains/kotlin. Major outcomes include preparing for future removal of deprecated APIs, enabling a dedicated web group in the Kotlin hierarchy, stabilizing functional tests, improving CocoaPods podspec generation, and modernizing Gradle build scripts and Webpack rules documentation. These changes lower risk, accelerate feature delivery, and improve developer experience.

June 2025: Key features delivered, bugs fixed, impact, and technical accomplishments across google/kotlin and JetBrains/kotlin repos. Highlights include Kotlin Gradle Plugin JS testing DSL enhancements, extensive documentation improvements for JS/Wasm, KarmaConfig, and KotlinJsSubTargetContainerDsl; minor fixups and polish; no explicit major bug fixes captured in this period.

April 2025 monthly summary for google/kotlin: Delivered consolidated Kotlin Gradle Plugin documentation detailing Node.js-based execution environments (JS, WasmJS, Wasi) and bundle distribution across Kotlin/JS and Kotlin/Wasm targets. Clarified usage of HasBinaries, browser DSL, sub-target DSLs, and experimental distribution to improve developer onboarding and align with Gradle plugin updates. No major bugs fixed this month in this repo.