What's new in Expo SDK 55

Expo SDK 55 is here! In this video, you'll learn everything new in the latest release — from Expo Router v7 with liquid glass bottom tabs and native navigation APIs, to bytecode diffing for OTA updates (estimated 75% smaller update sizes), AI agent support with MCP server integration, and the brand new Expo Widgets package for building live activities and widgets without writing native code. Read the changelog for all the details: https://expo.dev/changelog/sdk-55 Here's a summary of what's covered: Expo Router v7: liquid glass tabs, zoom transitions, native colors API, stack toolbar, split views New SDK versioning convention (all packages now start with SDK version number) React Native 0.83.1 + React 19.2 — use Activity, Suspense, and the use hook in production Legacy architecture officially dropped in SDK 55+ Hermes V1 opt-in with improved ES6 support and performance Bytecode diffing for Expo Updates (opt-in, default in SDK 56) Expo Brownfield target for incremental migration from native apps Expo UI approaching stable (mid-2026) Expo Blur now stable on Android Expo Sharing with share extension support on iOS + Android ⌚️ Timestamps ⌚️ 00:00 Intro - Expo SDK 55 is Here 00:49 Creating a New Project & Beta Testing 01:34 React Native 0.83.1 & React 19.2 Support 02:03 Activity API & New React Features 02:40 New Architecture is Now Default 02:47 Revamped Project Template & Liquid Glass Tabs 03:22 Hermes v1 Support & How to Enable 04:06 Bytecode Diffing for Expo Updates 05:13 First-Class AI Agent Support & Skills 06:33 Expo Router Colors API for Material Design 07:37 Apple Sum Transitions & Stack Toolbar API 08:32 Split Views & Footer Support 08:44 Expo Router Improvements Summary 08:55 Brownfield Native App Support 09:44 Expo UI Progress Update 10:02 SDK Package Versioning Scheme 10:19 Expo Widgets Package (Alpha) 10:58 Expo Blur Stable on Android 11:11 Expo Sharing - Share Extension Support 11:50 Wrap Up & Check the Changelog #Expo #reactnative #reactnativetutorial