Next.js 15.4 is here: What’s new and what to expect

Next.js 15.4 represents a significant milestone for the framework, particularly with the integration of Turbopack, which has achieved 100% test coverage across thousands of scenarios, marking it as a reliable tool for production use. This release brings a host of improvements, including performance tweaks, stability fixes, and new features like Prefetch invalidation Hook and enhanced metadata support for 404 pages. The update aims to streamline developer workflows and improve reliability, setting the stage for the upcoming Next.js 16, which promises further enhancements such as optimized client-side routing and advanced DevTools. Upgrading to 15.4 is particularly advantageous for those seeking performance gains and is recommended to be tested thoroughly in a development environment before full deployment.

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