Next.js 16.2 Turbopack: 400% Faster next dev — What It Actually Feels Like

Next.js 16.2 shipped last month with one headline claim: next dev\ is now 400% faster. The official release notes promise 10x HMR on large projects. Turbopack replaces Webpack as the default bundler. I've been running it on five production-grade template repos for two weeks. Here's what that actually feels like in practice. The Boring Answer: Yes, It's Fast Here are the numbers I saw across the Craftly template repos (Next.js 16.2.2, MacBook Air M2): Repo 15.x next dev\ cold 16.2 next dev\ cold