Kotlin roadmap

Last modified on	December 2022
Next update	June 2023

Welcome to the Kotlin roadmap! Get a sneak peek into the priorities of the Kotlin Team.

Key priorities

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

To view the biggest projects we're working on, visit the YouTrack board or the Roadmap details table.

If you have any questions or feedback about the roadmap or the items on it, feel free to post them to YouTrack tickets or in the #kotlin-roadmap channel of Kotlin Slack (request an invite).

YouTrack board

Visit the roadmap board in our issue tracker YouTrack

Roadmap details

Subsystem	In focus now
Language	List of all upcoming language features Introduce special syntax for `until` operator Provide modern and performant replacement for `Enum.values()` Support non-local `break` and `continue` Design and implement solution for `toString` on objects
Compiler	Release K2 Beta Fix issues related to inline classes on the JVM Stabilize JVM-specific experimental features Implement an experimental version of Kotlin/Wasm compiler backend
Multiplatform	🆕 Promote Kotlin Multiplatform Mobile to Stable 🆕 Improve the new Kotlin/Native memory manager robustness and performance and deprecate the old one Stabilize klib: keep binary compatibility easier for library authors Improve exporting Kotlin code to Objective-C Improve Kotlin/Native compilation time
Tooling	🆕 First public release of K2-based IntelliJ plugin 🆕 Improve performance and code analysis stability of the current IDE plugin 🆕 Expose stable compiler arguments in Gradle DSL 🆕 Release the Experimental version of the Kotlin Notebooks IJ IDEA plugin Improve Kotlin scripting and experience with `.gradle.kts` Provide better experience with Kotlin Daemon Improve the performance of Gradle incremental compilation
Library ecosystem	🆕 Improve KDoc experience 🆕 Provide a Kotlin API guide for libraries authors Release `kotlinx-metadata-jvm` as Stable Stabilize `kotlinx-kover` Release `kotlinx-coroutines` 1.7 Stabilize and document `atomicfu` Improve `kotlinx-datetime` library Continue to develop and stabilize the standard library Release Dokka as Stable The Ktor framework roadmap

What's changed since May 2022

Completed items

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 kotlinx-serialization 1.4
✅ IDE: Stabilize code analysis
✅ IDE: Make update of compiler/platform versions faster
✅ IDE: Improve Multiplatform project support
✅ IDE: Stabilize Eclipse plugin
✅ IDE: Prototype the IDE plugin with the new compiler frontend
✅ IDE: Improve IDE performance
✅ IDE: Improve debugging experience
✅ Website: Make the Kotlin website mobile friendly
✅ Website: Make the UI and navigation consistent

New items

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

Removed items

We've removed the following items from the roadmap:

❌ Language: Research and prototype namespace-based solution for statics and static extensions
❌ Language: Multiple receivers on extension functions/properties
❌ 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.

Last modified: 25 May 2023