Edit Page

Kotlin Releases

We ship different types of releases:

  • Feature releases (1.x) that bring major changes in the language.
  • Incremental releases (1.x.y) that are shipped between feature releases and include updates in the tooling, performance improvements, and bug fixes.
  • Bug fix releases (1.x.yz) that include bug fixes for incremental releases.

For example, for the feature release 1.3 we had several incremental releases including 1.3.10, 1.3.20, and 1.3.70. For 1.3.70, we had 2 bug fix releases – 1.3.71 and 1.3.72.

For each incremental and feature release, we also ship several preview (EAP) versions for you to try new features before they are released. See Early Access Preview for details.

Learn more about types of Kotlin releases and their compatiblity.

Updating to a new release

IntelliJ IDEA and Android Studio suggest updating to a new release once it is out. When you accept the suggestion, it automatically updates the Kotlin plugin to the new version. You can check the Kotlin version in Tools | Kotlin | Configure Plugin Updates.

If you have projects created with earlier Kotlin versions, change the Kotlin version in your projects and update kotlinx libraries if necessary – check the recommended versions.

If you are migrating to the new feature release, Kotlin plugin's migration tools will help you with the migration.

Release details

The following table lists details of latest Kotlin releases.

You can also use preview versions of Kotlin.

Build info Build highlights Recommended kotlinx library versions
1.4.10

Released: September 7, 2020

Release on GitHub

A bug fix release for Kotlin 1.4.0.

Learn more about Kotlin 1.4.0.

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

1.4.0

Released: August 17, 2020

Release on GitHub

A feature release with many features and improvements that mostly focus on quality and performance.

Learn more in:

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

1.3.72

Released: April 15, 2020

Release on GitHub

A bug fix release for Kotlin 1.3.70.

Learn more about Kotlin 1.3.70.

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

On the JVM, you usually can use library versions other than the recommended ones.