Next.js 16.4 makes Cache Components the default path for new apps

Next.js 16.4 closes key gaps in its Cache Components model and makes it the recommended choice for every application, moving the framework toward a new default in Next.js 17. New projects created with create-next-app now enable Cache Components by default, while existing codebases get improved migration tooling alongside lazy compilation, smaller Turbopack output, and React 19.3 features.

• Next.js 16.4 was released on October 6, 2026 as v16.4.0.
• Cache Components is now recommended for every Next.js app, with new create-next-app projects enabling it by default.
• The release adds lazy compilation, smaller Turbopack output, Cache Components improvements, and new developer tooling.
• Next.js 16.4 includes React 19.3 features and improved tooling intended to help existing applications migrate to the new programming model.
• Cache Components is planned to become the default in Next.js 17, giving teams an early migration window.

Bottom line If you maintain a Next.js application, test 16.4 and its Cache Components migration path before Next.js 17 makes the model the default.