It's December, which means the 2025.3 release season is here! All our IDEs have received updates, and in this thread, we'll share some of the highlights. As usual, the new features are also available in plugins that you can install into IntelliJ IDEA or other JetBrains IDEs.

Apparently, even Christmas jumpers have their own holiday! It's hard to keep track of all these themed days, but our colleagues do – and they’ve prepared something special to celebrate. Get one for a friend, or treat yourself:

The world of AI doesn't seem to be slowing down as we reach the end of the year. @OpenAI GPT 5.2 has just been released, offering less verbose responses and more reliable instruction following. And it’s already available – both in Junie and in the AI chat inside your JetBrains

Congrats to the @MistralAI team on releasing Mistral Vibe! Since it already supports the Agent Client Protocol (ACP), you can add it to the AI chat in your JetBrains IDE e̵a̵s̵i̵l̵y̵ through a JSON configuration file and try it out right away.

Is DevOps still working? Kelsey Hightower breaks down the evolution toward platform engineering, AI-assisted ops, and life beyond Kubernetes. Watch the full interview 👉 https://t.co/ZnOsUGfn7P

Reminder: This is happening tomorrow! Discover how Mellum and @NVIDIA come together to drive smarter coding inside JetBrains IDEs.

Coding on a phone with an AI agent? That’s so last quarter! Our colleague @hszanowski took things to the next level: He ran @IntelliJIDEA and Junie on his gaming handheld and wrote a game in Kotlin using ONLY a controller:

Ever wondered who keeps Java’s bytecode ecosystem running? Marco talks with ByteBuddy creator Rafael Winterhalter about JVM internals, Mockito, and Hibernate under the hood, legacy Java realities, and the human side of open-source sustainability. Watch the full episode on the

Our Ask Me Anything week on Reddit is going strong! Don’t miss the Kotlin AMA on Thursday and the JetBrains AI AMA on Friday – and catch up on answers from earlier AMAs.

Moneyball meets esports! We’re teaming up with @cloud9 for a hackathon where you can analyze real game data, build an AI coach, or design a fan‑friendly minigame – and win cool prizes. With Cloud9, the sky is the limit.

JetBrains is joining the new Agentic AI Foundation, hosted by @linuxfoundation, to contribute to the next generation of open, transparent, and interoperable agentic technologies. AAIF will take stewardship of projects including MCP, goose, and https://t.co/ibq0LExzw1.

Download the new releases from https://t.co/xASkOijmnv, install them through the Toolbox App, or use in-product updates. Looking forward to your feedback!

The performance of @RustRover ’s debugger has been improved, and it allows you to evaluate a much wider range of Rust expressions during debugging. This release also significantly improves the quality of error highlighting and code insight features.

In @GoLandIDE, the editor now performs real-time analysis of resources that haven't been closed properly after use, preventing subtle leaks that can break your service under load. It also ships with built-in Terraform support and better Kubernetes workflows.

For @DataGrip and the database support in all IDEs, we've added integration with cloud database providers (AWS, Azure, and Google Cloud), as well as AI integration for explaining and optimizing queries.

For .NET and game developers, @JetBrainsRider supports C# 14 and .NET 10 and delivers significant improvements to startup performance and overall responsiveness. For Unreal Engine developers, it allows you to deploy and debug builds on Android devices.

In @Clion_IDE, the Nova language engine is now used by default, making highlighting and refactoring up to 4 times faster. And if you work with projects in C++ alongside other languages, you can now use the C++ plugin for IntelliJ IDEA and stay within a single IDE.

In @RubyMine, we've made many quality-of-life improvements to code insight and code completion, and improved the experience of startup and gem resolution for multimodule projects. More details on the blog:

. @PhpStorm adds out-of-the-box support for Laravel, which was previously provided via a paid third-party plugin, and updates its language support to PHP 8.5. Discover the story behind this update in this video:

For @WebStormIDE and the JavaScript/TypeScript development in other IDEs, we’ve added support for build-free editing in monorepos, as well as remote JavaScript debugging in WSL, Docker, SSH, or similar setups.

In @PyCharm, you can now work with Jupyter notebooks using the remote development feature, meaning you can open, edit, and run notebooks on a remote server with all IDE functions. Learn more about this, uv as default, Ruff and Pyright integrations, and more in our release video: