Kotlin Notebook Sunset - The JetBrains Blog

JetBrains has announced that starting with IntelliJ IDEA version 2026.2, Kotlin Notebook will be sunsetted as a product and will no longer be maintained internally, transitioning instead to an open-source model for community development. This decision comes in response to evolving demands for interactive tooling and the impact of AI tools on development workflows, as Kotlin Notebook did not achieve the expected adoption levels. Although JetBrains will unbundle Kotlin Notebook from future IntelliJ IDEA releases, the plugin will remain available on GitHub under the Apache License 2.0, where users can continue its development. JetBrains will continue to support the Kotlin Jupyter kernel on a best-effort basis during the transition, and encourages community involvement through the Kotlin Slack channel. Meanwhile, Kotlin DataFrame will continue to be developed, offering easier integration of notebook-style data transformations into regular Kotlin projects, with recent updates enhancing its functionality in Gradle and Maven environments.

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