Updates

Change Log

2026-06-13

Summary

• Review and maintenance round (no chapter content changes for this handbook).
• Fixed locale-leaking internal links so the English handbook stays in the /en/ locale:
  • Normalized 14 cover card links in index.mdx from bare /books/... to /en/books/....
  • Normalized the SDK 55 legacy compatibility link in sdk55-breaking-changes.mdx to /en/books/....
• Bumped index.mdx updatedAt to 2026-06-13.

Affected chapters

• index.mdx, sdk55-breaking-changes.mdx

Official sources

• (No source-backed content changes; structural link normalization only.)

2026-06-02

Summary

• Added the English version of the Expo Enterprise Production handbook.
• Updated the baseline to Expo SDK 56:
  • Expo SDK 56.0.0
  • React Native 0.85
  • React 19.2.3
  • Node.js 22.13.x or later
  • iOS 16.4+ / Xcode 26.4+
• Added SDK 56 breaking change coverage:
  • Hermes V1 by default
  • expo/fetch as the globalThis.fetch path
  • expo-file-system copy/move async behavior
  • Expo Router and React Navigation import boundary
  • @expo/vector-icons no longer implicit
  • Expo Go SDK 56 store-distribution caveat
• Added English chapters for Expo UI, widgets, Modules API, EAS Build, EAS Update, security, performance, testing, and enterprise distribution.
• Added verification report and official source tracking.

Affected chapters

• index.mdx, meta.json, sdk56-breaking-changes.mdx
• new-architecture-deep-dive.mdx, react19-concurrency.mdx
• expo-ui-native.mdx, expo-widgets.mdx, modules-api-v2.mdx
• eas-build-pipeline.mdx, eas-update-ota.mdx
• security-signing.mdx, performance-profiling.mdx
• testing-strategy.mdx, enterprise-distribution.mdx
• verification.mdx

Official sources

• https://expo.dev/changelog/sdk-56
• https://docs.expo.dev/versions/latest/
• https://docs.expo.dev/workflow/upgrading-expo-sdk-walkthrough/
• https://docs.expo.dev/router/migrate/sdk-55-to-56/
• https://docs.expo.dev/versions/latest/sdk/ui/
• https://docs.expo.dev/versions/latest/sdk/ui/universal/
• https://docs.expo.dev/versions/latest/sdk/widgets/
• https://docs.expo.dev/modules/inline-modules-reference/
• https://docs.expo.dev/guides/prebuilt-expo-modules/
• https://docs.expo.dev/eas/cli/
• https://docs.expo.dev/eas/environment-variables/
• https://docs.expo.dev/eas-update/runtime-versions/
• https://docs.expo.dev/eas-update/rollouts/
• https://docs.expo.dev/eas-update/code-signing/
• https://docs.expo.dev/eas/observe/introduction/
• https://docs.expo.dev/eas/observe/get-started/
• https://docs.expo.dev/skills/

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**Affected chapters**

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**Official sources**

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