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SDK57 — Expo SDK 57 landed, moving React Native from 0.85 to 0.86 while React stays at 19.2, and it is meant to ship no breaking changesCADENCE — The release hints at a new cadence: small, non-breaking upgrades slotted between the larger SDK releases, which makes keeping up easier to planRN086 — React Native 0.86 highlights include edge-to-edge fixes on Android, light and dark mode emulation in React Native DevTools, and rendering, layout, and animation fixesPREBUILD — expo prebuild improved how it clears and regenerates native directories, and expo-dev-client picked up iOS enhancementsIOS27 — iOS 27 reached beta 4 on July 20 and opened to public beta testers on July 22, so it is time to check generated apps ahead of the autumn releaseAND17 — Starting with Android 17, traditional Developer Previews are gone, replaced by continuously updated Canary buildsSDK57 — Expo SDK 57 landed, moving React Native from 0.85 to 0.86 while React stays at 19.2, and it is meant to ship no breaking changesCADENCE — The release hints at a new cadence: small, non-breaking upgrades slotted between the larger SDK releases, which makes keeping up easier to planRN086 — React Native 0.86 highlights include edge-to-edge fixes on Android, light and dark mode emulation in React Native DevTools, and rendering, layout, and animation fixesPREBUILD — expo prebuild improved how it clears and regenerates native directories, and expo-dev-client picked up iOS enhancementsIOS27 — iOS 27 reached beta 4 on July 20 and opened to public beta testers on July 22, so it is time to check generated apps ahead of the autumn releaseAND17 — Starting with Android 17, traditional Developer Previews are gone, replaced by continuously updated Canary builds
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Expo SDK 57

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Rork Dev/2026-07-28Advanced

Counting what prebuild --clean will erase before you upgrade to Expo SDK 57

A raw diff between two generated ios/ trees showed 649 changed lines; only 3 were real edits. How to count what prebuild --clean erases, and move it into a config plugin.