KotlinConf’26 Keynote Highlights: Advances in Language Design, Tooling, AI-Driven Workflows, and Multiplatform Development | The Kotlin Blog

KotlinConf’26 celebrated Kotlin's 15th anniversary by showcasing its comprehensive evolution from a programming language into a multifaceted ecosystem supporting backend, mobile, web, AI, and multiplatform development. The keynote featured advances in language design, tooling, and AI-driven workflows, emphasizing the importance of ergonomics and safety. Notable announcements included the preview of Kotlin 2.4.0, which introduces features like context parameters and multi-field value classes, and the launch of Kotlin Toolchain, a unified platform for development tasks. The event also highlighted the growing adoption of Kotlin Multiplatform, with companies like PayPal, Booking.com, and Sony leveraging its capabilities for scalable applications. The integration of AI tools, such as JetBrains’ coding agent Junie and the newly released Koog 1.0 framework, underscores Kotlin's commitment to enhancing developer productivity and building reliable AI systems. Additionally, collaborations with industry giants like Google on the K2 compiler and the Kotlin Symbol Processing tool demonstrate Kotlin's deep integration within the Android ecosystem. The conference underscored Kotlin's trajectory toward becoming a comprehensive solution for modern software development, promoting clarity, safety, and enhanced productivity across various domains.