Breaking

Android specific

• Implement getJSCallInvokerHolder() for Bridgeless Catalyst Instance (c6076bca97 by @arushikesarwani94)

Added

• Add inspector proxy device message middleware API (3f41fb5d5b by @byCedric)
• Fallback to query parameter based user-agent when header is unset (c62be78d99 by @byCedric)

iOS specific

• Allow the activityIndicator to be controlled from JS in bridgeless mode (9aeb9f2f94 by @cipolleschi)

Changed

• Update @react-native-community/cli to 13.6.2 (bc745cb6ff by @szymonrybczak)

Fixed

• Add missing registerCallableModule TypeScript definitions (6bc95b2074 by @Kudo)
• Allow Inspector proxy to inline source maps on LAN connections (3dee6d31b9 by @byCedric)
• Fix Bridgeless React Context test in OSS (bdca260679)
• Fix bug where absolute nodes were not insetted correctly in certain cases (3341ab7cc0 by @joevilches)

Android specific

• Properly handle RR and CMD+M in Bridgeless Mode (e9f66d9c0c by @cortinico)
• Bring back the UNSET constant to TextAttributeProps. (9700540bec by @dmytrorykun)

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Hermes dSYMS:

• Debug
• Release

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How to Test

Generate a new project:

npx react-native@next init RN0740RC4 --version 0.74.0-rc.4

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• You can participate in the conversation on the status of this release in the working group.
• To help you upgrade to this version, you can use the upgrade helper ⚛️.
• See changes from this release in the changelog.

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Help us testing 🧪

Let us know how it went by posting a comment in the working group discussion! Please specify with system you tried it on (ex. macos, windows).

Bonus points: It would be even better if you could swap things around: instead of using a fresh new app, use a more complex one - or use a different library that is already leveraging the new architecture!