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Welcome to the Kotlin roadmap! Get a sneak peek into the priorities of the Kotlin Team.
The goal of this roadmap is to give you a big picture. Here's a list of our key projects – the most important things we focus on delivering:
K2 compiler: a rewrite of the Kotlin compiler optimized for speed, parallelism, and unification. It will also let us introduce many anticipated language features.
K2-based IntelliJ plugin: much faster code completion, highlighting, and search, together with a more stable code analysis.
Kotlin Multiplatform Mobile: promote the technology to Stable by improving the toolchain stability and documentation, and ensuring compatibility guarantees.
Experience of library authors: a set of documentation and tools helping to set up, develop, and publish Kotlin libraries.
Kotlin roadmap by subsystem
In focus now
What's changed since May 2022
We've completed the following items from the previous roadmap:
✅ Compiler core: Maintain the current compiler
✅ Kotlin/JVM: Support kapt in JVM IR
✅ Kotlin/JVM: Maintain the new JVM IR backend
✅ Kotlin/JVM: Improve the new JVM IR backend compilation time
✅ Kotlin/Native: Provide binary compatibility between incremental releases
✅ Kotlin/Native: Promote new memory manager to Beta and enable it by default
✅ Kotlin/JS: Make the new JS IR backend Stable
✅ Kotlin/JS: Maintain the old JS backend by fixing critical bugs
✅ Multiplatform: Promote Kotlin Multiplatform Mobile to Beta
✅ Libraries: Release
✅ IDE: Stabilize code analysis
✅ IDE: Stabilize Eclipse plugin
✅ IDE: Improve IDE performance
✅ IDE: Improve debugging experience
✅ Website: Make the Kotlin website mobile friendly
✅ Website: Make the UI and navigation consistent
We've added the following items to the roadmap:
ℹ️ Language: List of all upcoming language features
🆕 Multiplatform: Promote Kotlin Multiplatform Mobile to Stable
🆕 Multiplatform: Improve the new Kotlin/Native memory manager robustness and performance and deprecate the old one
🆕 Tooling: First public release of K2-based IntelliJ plugin
🆕 Tooling: Improve performance and code analysis stability of the current IDE plugin
🆕 Tooling: Expose stable compiler arguments in Gradle DSL
🆕 Tooling: Kotlin Notebooks IDEA plugin
🆕 Libraries: Improve KDoc experience
🆕 Libraries: Provide a Kotlin API guide for libraries authors
We've removed the following items from the roadmap:
❌ Language: Support inline sealed classes
❌ K2 compiler: Stabilize the K2 Compiler Plugin API
❌ K2 compiler: Provide Alpha support for Native in the K2 platform
❌ K2 compiler: Provide Alpha support for JS in the K2 platform
❌ K2 compiler: Support Multiplatform in the K2 platform
❌ Multiplatform: Improve stability and robustness of the multiplatform toolchain
❌ Multiplatform: Improve Android support in Multiplatform projects
❌ Build tools: Make compilation avoidance support Stable for Gradle
❌ Website: Improve Kotlin Playground
Items in progress
All other previously identified roadmap items are in progress. You can check their YouTrack tickets for updates.