Kotlin Help

Participate in the Kotlin Early Access Preview

You can participate in the Kotlin Early Access Preview (EAP) to try out the latest Kotlin features before they are released.

We ship a few Milestone (M) builds before every feature (1.x) and incremental (1.x.y) release.

We’ll be very thankful if you find and report bugs to our issue tracker YouTrack. It is very likely that we’ll be able to fix them before the final release, which means you won’t need to wait until the next Kotlin release for your issues to be addressed.

By participating in the Early Access Preview and reporting bugs, you contribute to Kotlin and help us make it better for everyone in the growing Kotlin community. We appreciate your help a lot!

If you have any questions and want to participate in discussions, you are welcome to join the #eap channel in Kotlin Slack. In this channel, you can also get notifications about new EAP builds.

Install the Kotlin EAP Plugin for IDEA or Android Studio

If you have already installed the EAP version and want to work on projects that were created previously, check our instructions on how to configure your build to support this version.

Build details

Build infoBuild highlightsRecommended kotlinx library versions

Released: July 19, 2021

Release on GitHub

  • Kotlin/Native: support for Apple silicon, improved Kotlin DSL for Cocoapods Gradle plugin, optimized access to object declarations with const val s only, and debugger improvements.

  • Kotlin Multiplatform: sharing custom cinterop libraries between platforms, new default publishing setup for Android artifacts, and XCFrameworks support.

  • Kotlin/JS: source maps generation for the IR compiler backend.

  • Swift/Objective-C interop: experimental interoperability with Swift 5.5 async/await, improved singleton mapping

  • Passing by value for more C structs using C interop.

  • Compiler improvements: requiring opt-in on implicit usages of experimental APIs, changes in using opt-in requirement annotations with different targets.

For more details, please refer to the changelog or this blog post.

The versions of libraries from kotlin-wrappers (such as kotlin-react) can be found in the corresponding repository.

Last modified: 20 July 2021