v6.0.0-rc.3

🚀 What's New

🔐 Security & Biometrics

• ⭐ Automatic Class 3 enforcement: Android now locks onto strong (Class 3) biometrics by default when hardware supports them, gracefully falling back to the strongest available authenticator on older devices.
• 🗑️ Removed manual toggle: The androidBiometricsStrongOnly option is gone—strong biometrics are now the default behavior with no user knob to turn off.
• ✅ Simplified API surface: Cleaner Kotlin/JS/C++ bindings reflect the hardened defaults across all request types.

🎨 Example Playground Refresh

• 🎯 Hardware-aware selector: Access-control options now grey out unsupported policies in real-time, reflecting your device's actual capabilities.
• 🔄 Auto-upgrade logic: The UI automatically selects the strongest viable guard when you switch devices.
• 💡 Inline guidance: A helpful note explains that the native layer always picks the best security tier available.

📚 Documentation & Migration

Note

Pick your release track:

• 6.0.0-rc.2 (Nitro hybrid): Fastest path forward with 3.3× bridge speedup, richer metadata, and stronger defaults.
• 5.6.0 (Last bridge): Final pre-Nitro release with latest Android 13 fixes and namespace cleanups—Fabric architecture only.
• 5.5.x (Legacy): Paper architecture support, no new features—users should upgrade to 5.6.0 at minimum.

🔧 Under the Hood

• 📊 Enhanced SecurityAvailabilityResolver now tracks strong biometrics explicitly.
• 🎛️ Tightened AccessControlResolver to ensure secure-enclave requests only run when hardware is ready.
• 🏗️ Generated bindings (Kotlin, C++, Swift) pruned to match the simplified options payload.

📈 Performance & Reliability

• ⚡ Nitro v6 users see 3× faster operations compared to the classic bridge.
• 🛡️ Android 13 prompt hangs resolved via improved activity lifecycle tracking.
• 📱 Restored manual device credential fallback for Android 9 parity.

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