Kodee’s Kotlin Roundup: 2.2.20-Beta2, Shipaton 2025, and a New Face on the Foundation Board

Kotlin 2.2.20-Beta2

Kotlin 2.2.20-Beta2 is here with smart upgrades ready for adventurous developers! Kotlin Multiplatform continues to show off its cross-platform muscles, with Swift export now available by default and a new target for web development, while Kotlin/Native gets cool improvements for managing binaries and debugging.

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Kotlin ranks 15th among popular programming languages

Kotlin has officially claimed fifteenth place among the most-used programming languages, according to the 2025 Stack Overflow Developer Survey. We might not be in the top 10 (yet!), but this just means we have more room to surprise everyone later.

Kotlin Language Server update

The first post-KotlinConf release is worth the wait. Kotlin Language Server Protocol is now much more polished in its core functionality, and while there’s still plenty of work ahead, it’s taking shape nicely. As for me? Let’s just say I’m very excited!

Check out the release notes

Ship, share, and win: The Kotlin Multiplatform award at Shipaton 2025

Got an app idea itching to break free? Shipaton 2025 is your two-month chance to bring it to life – and for Kotlin developers, the timing couldn’t be better. With Compose Multiplatform for iOS now Stable, it’s a great moment to dive in. Build it, ship it, and you could snag the Kotlin Multiplatform Reach Award… plus a slice of a USD 55,000 prize pool. Now, if you’ll excuse me, I have an award to win.

Learn more about Shipaton 2025

The Kotlin Foundation welcomes Sergei Rybalkin to the board

Big news from the Kotlin Foundation boardroom – we’ve got a new face at the table! Please welcome Sergei Rybalkin, Senior Staff Software Engineer at Meta and longtime Kotlin champion. Before Meta, Sergei boosted Kotlin adoption at Alibaba Group, working on server-side architecture, function-as-a-service (FaaS) platforms, and JVM frameworks. Now Sergei is bringing that expertise (and probably a few good stories) to help steer Kotlin’s future.

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What’s new in IntelliJ IDEA 2025.2

The latest IntelliJ IDEA is out! There’s a shiny new Spring debugger, support for Spring Modulith, and – drumroll 🥁 – your core Kotlin features stick around even if your Ultimate subscription runs out. Plus, plenty more under the hood to make your coding life smoother.

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Context-sensitive resolution in Kotlin 2.2

New on the Kotlin YouTube channel – context-sensitive resolution in Kotlin 2.2 is here to make your life easier on the quiet. This experimental feature lets you skip the extra type qualifiers when the compiler can already tell what you mean. It’s the kind of change you won’t notice until you realize your code just feels… neater.

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KotlinX RPC 0.9.1 is now available

KotlinX RPC 0.9.1 is here, setting the stage for long-term stability and evolution. This release brings decoupling from KotlinX Serialization, cleaner API and lifetime management, and Strict mode by default.

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Building better agents: What’s new in Koog 0.3.0

Not aware that Koog is a Kotlin-based framework for building and running AI agents entirely in idiomatic Kotlin? Well, now you are – and version 0.3.0 just landed! It’s packed with improvements that make building, running, and managing intelligent agents a whole lot easier. This version brings better durability, faster execution, richer observability, and smoother integration with real-world systems. And with Koog, this is good. Why someone wouldn’t give it a try is beyond me.

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When Tool-Calling Becomes an Addiction: Debugging LLM Patterns in Koog

I’ll admit, I was reading this debugging story like it was a mystery novel. Our AI agent was doing great – until it suddenly stopped listening. What went wrong? A trail of subtle clues led us to an unexpected culprit: It had learned to ignore instructions. Learn how the JetBrains team cracked the case and fixed the pattern.

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