kotlin

Gradle 9.9.0 compiles Kotlin DSL scripts incrementally (Gradle reports 65% faster recompiles in one test), applies test filters to non-method JUnit tests, and changes Problems API IDs.

Kotlin 2.5.0-Beta2, a pre-release published October 21, introduces experimental companion blocks and full value classes, a .kar publication format for multiplatform libraries, and an error on compiler runs below JDK 17.

JetBrains now recommends the Kotlin Toolchain for most new Kotlin Multiplatform projects as v0.13 adds kotlin new and SwiftPM support, while the KMP plugin drops Swift IDE features.

Kotlin 2.4.20, released September 7, maps sealed classes to Swift enums, adds new Kotlin/Wasm compilation modes, and ships a first experimental native compiler image.

JetBrains' Compose Multiplatform 1.12.0 adds an experimental MCP server to Compose Hot Reload, letting AI agents reload, screenshot, and click through running apps.

JetBrains released Kotlin 2.4.0 on June 4, promoting context parameters and explicit backing fields to Stable, dropping the K1 compiler, and adding Swift package dependencies for Multiplatform.

JetBrains unveiled an official Kotlin extension for VS Code in alpha, previewed Kotlin 2.4-RC feature stabilizations, and published research showing Kotlin development cycles are 15–20% shorter than Java.

Gradle 9.5.0 and its patch 9.5.1 bring clearer diagnostics, CI-resilient wrapper downloads, and long-awaited Kotlin DSL improvements.

Kotlin 2.3.20 ships name-based destructuring, default Build Tools API on Kotlin/JVM, Gradle 9.3.0 compatibility, and Wasm string performance gains of up to 4.6 times.