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Devii · Mobile · 2026-04-02 · 6 min read

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Expo SDK 55 (2026): RN 0.83, React 19.2, And What Ships Next

Stable SDK 55 in early 2026: React Native 0.83, legacy architecture fully behind us, and SDK 56 on the horizon with RN 0.85.

**Expo SDK 55** (stable from February 2026, with patch releases such as 55.0.2) ships **React Native 0.83** and **React 19.2**, matching the matrix published on `docs.expo.dev`. Expo has positioned SDK 54 as the last line carrying the legacy architecture; on SDK 55 you should assume **New Architecture only** when auditing native dependencies.

Team collaboration around a shared roadmap
Team collaboration around a shared roadmap

Expo’s changelog previews **SDK 56** targeting **React Native 0.85** in Q2 2026, while **canary** SDK builds track newer RN lines (including 0.84) for early adopters-use canaries only when you accept churn.

Planning session on a whiteboard
Planning session on a whiteboard

Before upgrading: run `expo-doctor`, align Expo SDK packages to the same major (`^55.0.0`), and validate **development builds** (not only Expo Go) for anything touching native code. Treat `expo.dev/changelog` and the SDK reference as authoritative.