React Native in 2026: The New Architecture Guide

React Native keeps evolving. With React Native 0.87, the New Architecture is standard, Hermes and Fabric are fully mature, and building high-performance apps is easier than ever. ⚡ What’s New in 2026? 1️⃣ JSI (JavaScript Interface) Direct JS ↔ C++ communication No JSON serialization → faster interop Real-time processing (e.g., VisionCamera handles 30MB frames at 2GB/s) 2️⃣ Fabric Renderer Synchronous UI pipeline → smooth 60 FPS Faster touch responses & less UI congestion Full support for React 18 concurrent features 3️⃣ TurboModules Lazy-loaded native modules Faster startup & lower memory usage 📊 Real-World Gains Shopify: 10% faster Android launch, 3% iOS Memory dropped 85MB → 52MB Smooth animations even on heavy screens 🛠 Key Features (RN 0.83 → 0.87) Hermes V1/V2 improvements → faster TTI & bundle loading Expo Go updates → instant testing on devices Reanimated 4 & FlashList 2 → smoother animations & lists TypeScript first-class support → better IDE autocomplete 🔧 Migration Tips Audit