next.js
v15.1.0
Next.js 15.1: Turbopack is Now Stable
The long-awaited Turbopack is finally stable in Next.js 15.1, bringing 10x faster cold starts and improved HMR performance.
Next.js 15.1: Turbopack is Now Stable
After months of beta testing, Turbopack is officially stable in Next.js 15.1. Here's what you need to know.
10x Faster Cold Starts
Turbopack delivers dramatically faster development server startup times compared to Webpack. In our testing, a large application that took 30 seconds to start now boots in under 3 seconds.
## Improved HMR
Hot Module Replacement is now nearly instantaneous, even in large codebases. Changes are reflected in the browser in milliseconds.
## Migration Guide
To enable Turbopack, update your dev script:
json
{
"scripts": {
"dev": "next dev --turbopack"
}
}What's Next
The team is now working on production build support for Turbopack, expected in Next.js 16.
Key Highlights
- New features for developers
- Performance improvements
- Recommended for migration
Note
Before upgrading, we recommend reviewing the breaking changes in the official documentation.