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JetBrains Discontinues Swift Language IDE Support in Kotlin Multiplatform Plugin

JetBrains logo with Kotlin Multiplatform and Swift icons
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Summary

  • Starting with IntelliJ IDEA 2026.3 and Android Studio Rabbit 2 | 2026.2.2, Swift language IDE features in the Kotlin Multiplatform plugin are discontinued.
  • Discontinued features include editing, syntax highlighting, and navigation within Swift files and between Swift and Kotlin.
  • iOS applications and debugging Kotlin code on iOS will remain fully supported.

JetBrains says that Swift language IDE features in the Kotlin Multiplatform (KMP) plugin will be discontinued starting with IntelliJ IDEA 2026.3 and Android Studio Rabbit 2 | 2026.2.2. The change covers editing, syntax highlighting, and navigation within Swift files and between Swift and Kotlin.

WHAT REMAINS SUPPORTED

iOS applications and debugging Kotlin code on iOS will remain fully supported. Kotlin/Native functionality, including Swift Export and importing Swift packages into Kotlin projects, is not affected. TechStaged has also covered Cloudflare opens second non-profit cohort to accelerate AI-powered civil-society tools.

OLD VERSIONS RETAIN, BUT WON’T RECEIVE UPDATES

The existing Swift functionality will remain available in earlier versions of IntelliJ IDEA, Android Studio, and the Kotlin Multiplatform plugin, though those older versions will not receive further updates.

A LOOK AT THE ORIGINS AND RATIONALE

JetBrains notes that Swift support originated with AppCode (the now-discontinued iOS IDE) and was later adapted for Fleet’s polyglot capabilities and for mixed Kotlin–Swift codebases in the Kotlin Multiplatform plugin. While analyzing feature adoption, they found active usage to be limited and steadily declining.

WHY THE CHANGE IS BEING MADE

Maintenance of the Swift tooling requires ongoing effort to keep pace with changes in Swift, Xcode, and the IntelliJ Platform. After evaluating engineering investment against actual usage, JetBrains decided not to continue supporting Swift IDE features in the KMP plugin.

WHAT HAPPENS NEXT

JetBrains says there are no plans to replace the discontinued Swift tooling. The focus going forward will be on delivering stronger Kotlin tooling in IntelliJ IDEA and Android Studio and on improving the Kotlin Multiplatform experience for iOS developers.

ACKNOWLEDGMENTS

The announcement thanks users who relied on Swift IDE features and those who contributed to Swift support during its AppCode era and subsequent iterations.

Reporting by Owen Blackridge; editing by TechStaged editors

Editorial disclosure: This article was prepared with AI assistance from a source-limited research package and passed TechStaged's automated factual, originality, licensing, and publication checks.

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Owen Blackridge

Owen Blackridge

Technology Editor

Owen covers platform shifts, AI launches, and the practical impact of emerging technology on small teams.