expo-av is gone in SDK 55 — expo-audio is the replacement. Learn the new hook-based API, recording, background playback, and how to migrate without breaking your app.
Step-by-step guide to upgrading from Expo SDK 53 through 55. Covers the mandatory New Architecture transition, Reanimated v4, expo-av removal, app.json config changes, and practical troubleshooting for each phase.
React Native 0.79 delivers Metro 0.82 with 3x faster startup, 12% faster Android app launch with uncompressed bundles, simplified native module registration, and JSC community migration. Here's everything you need to know, plus a step-by-step upgrade path.