The branch cut has happened.
Current latest release: v0.64.2

Highlighted Changes

• Hermes 0.8
  • New Garbage Collector https://twitter.com/tmikov/status/1387126479801126913
  • Hermes Intl support on Android Intl Support facebook/hermes#23 (comment)
  • HV32 (SMI + Pointer compression): https://twitter.com/tmikov/status/1385629737121243140
  • An important perf fix : Performance drop using cloneDeep of lodash facebook/hermes#471 (comment)

Work Required

• Merge #31128
• Rename unstable_RootTagContext to RootTagContext
• Make RootTag's type opaque
• RC cut 0.65-stable
• Work before RC.0
  • Revert legacy rootTag just on 0.65 branch. PR is here to merge
  • Support for Xcode 12.5 (alternately, skip these and use the same patch as used on 0.64)
    • facebook/react-native@8eceee7
    • facebook/react-native@36b58a8
    • facebook/react-native@b9243e0
  • Hermes published 0.8
    • Pin Hermes pod to 0.8: Pin hermes-engine to 0.8.x for RN 0.65 facebook/react-native#31456
    • Bump Hermes npm to 0.8: facebook/react-native@2b67631
    • Show Hermes version on NewAppScreen: facebook/react-native@c54aecc
  • Security Related Fix: facebook/react-native@33ef82c
  • Bump CLI (and Metro): facebook/react-native@0d32aef
  • fix(hermes): fixed hermes build on iOS: facebook/react-native@59abb5f
  • Bump flipper deps to 0.91 (iOS) to support XCode 12.5 out of the box: facebook/react-native@4246c75
  • Bump flipper deps to 0.91 (android): Bump Android deps to 0.91 facebook/react-native#31675
  • Gradle 6.9, Android Gradle Plugin 4.2.1: facebook/react-native@547b4c9
  • bump buildToolsVersion to 30.0.2 facebook/react-native@5d01110
  • Upgrade jsc-android to 250230.2.1: facebook/react-native@341f061
  • remove jcenter: facebook/react-native@70da640
  • find-node.sh supports Homebrew on M1 facebook/react-native@502b819
• Publish RC.0
• Update Docs
  • New Docs for RootTagContext
• Changelog draft
• Upgrade helper update

Optional Picks

• Hermes published 0.8.1
  • Hermes Support for ARM64 simulator & Catalyst: arm64 simulators & catalyst support facebook/hermes#475
• Hermes inspector improvement: facebook/react-native@7579ed3
• Fix for UIManager module not found: facebook/react-native@b0e8c1e
• Add onPressIn & onPressOut props to Text: facebook/react-native@1d92454
• localeIdentifier missing from flow type of I18nManager: facebook/react-native@6b91ae7
• use maven-publish plugin: facebook/react-native@fc6fc63
• fix: update to @jest/create-cache-key-function@27 facebook/react-native@2f477b1
• [iOS] Custom NSURLSession configuration facebook/react-native@58444c7

Dates

We are thinking about these rough dates for this release:

• Cut Release Candidate: TBC
• Publish as Release Candidate: TBC
• Publish as Stable: TBC