diff --git a/.github/workflows/intl4x_artifacts.yml b/.github/workflows/intl4x_artifacts.yml
new file mode 100644
index 00000000..76987e31
--- /dev/null
+++ b/.github/workflows/intl4x_artifacts.yml
@@ -0,0 +1,158 @@
+name: Generate artifacts for intl4x
+
+permissions:
+  contents: write
+
+on:
+  push:
+    tags:
+      - 'intl4x-v.*'
+  workflow_dispatch:
+
+jobs:
+  dart-libs:
+    name: "Build Dart binaries"
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ ubuntu-latest, macos-latest, windows-latest ]
+    runs-on: ${{ matrix.os }}
+
+    steps:
+    - uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9
+      with:
+        submodules: 'true'
+
+    - name: Install Rust toolchains
+      run: |
+        rustup toolchain install stable
+    
+    - name: Show the selected Rust toolchain
+      run: rustup show
+    
+    - uses: dart-lang/setup-dart@b64355ae6ca0b5d484f0106a033dd1388965d06d
+      with:
+        sdk: dev
+
+    - name: Setup additional linkers
+      if: matrix.os == 'ubuntu-latest'
+      run: |
+        sudo apt-get install gcc-aarch64-linux-gnu gcc-arm-linux-gnueabihf gcc-riscv64-linux-gnu gcc-i686-linux-gnu
+        mkdir .cargo
+        echo "[target]" >> .cargo/config.toml
+        echo "aarch64-linux-android.linker=\"$ANDROID_NDK_LATEST_HOME/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android30-clang\"" >> .cargo/config.toml
+        echo "armv7-linux-androideabi.linker=\"$ANDROID_NDK_LATEST_HOME/toolchains/llvm/prebuilt/linux-x86_64/bin/armv7a-linux-androideabi30-clang\"" >> .cargo/config.toml
+        echo "i686-linux-android.linker=\"$ANDROID_NDK_LATEST_HOME/toolchains/llvm/prebuilt/linux-x86_64/bin/i686-linux-android30-clang\"" >> .cargo/config.toml
+        echo "x86_64-linux-android.linker=\"$ANDROID_NDK_LATEST_HOME/toolchains/llvm/prebuilt/linux-x86_64/bin/x86_64-linux-android30-clang\"" >> .cargo/config.toml
+        echo "riscv64-linux-android.linker=\"$ANDROID_NDK_LATEST_HOME/toolchains/llvm/prebuilt/linux-x86_64/bin/riscv64-linux-android35-clang\"" >> .cargo/config.toml
+        echo "aarch64-unknown-linux-gnu.linker=\"aarch64-linux-gnu-gcc\"" >> .cargo/config.toml
+        echo "armv7-unknown-linux-gnueabihf.linker=\"arm-linux-gnueabihf-gcc\"" >> .cargo/config.toml
+        echo "riscv64gc-unknown-linux-gnu.linker=\"riscv64-linux-gnu-gcc\"" >> .cargo/config.toml
+        
+    - name: Build Linux
+      if: matrix.os == 'ubuntu-latest'
+      run: |
+        cd submodules/icu4x
+
+        mkdir bin
+
+        cd ffi/dart
+        dart pub get
+        cd ../..
+        dart run ffi/dart/tool/build_libs.dart bin/android_arm android_arm
+        dart run ffi/dart/tool/build_libs.dart bin/android_arm64 android_arm64
+        dart run ffi/dart/tool/build_libs.dart bin/android_ia32 android_ia32
+        dart run ffi/dart/tool/build_libs.dart bin/android_x64 android_x64
+        dart run ffi/dart/tool/build_libs.dart bin/linux_arm linux_arm
+        dart run ffi/dart/tool/build_libs.dart bin/linux_arm64 linux_arm64
+        dart run ffi/dart/tool/build_libs.dart bin/linux_riscv64 linux_riscv64
+        dart run ffi/dart/tool/build_libs.dart bin/linux_x64 linux_x64
+
+        cargo run -p icu_datagen -- --locales full --keys all --format blob --out bin/full.postcard
+
+        cd provider/datagen # avoid global feature resolution
+        rustup target add aarch64-unknown-linux-gnu
+        cargo build --release --bin icu4x-datagen --no-default-features --features bin,blob_exporter,blob_input,rayon,experimental_components --target aarch64-unknown-linux-gnu
+        rustup target add riscv64gc-unknown-linux-gnu
+        cargo build --release --bin icu4x-datagen --no-default-features --features bin,blob_exporter,blob_input,rayon,experimental_components --target riscv64gc-unknown-linux-gnu
+        rustup target add x86_64-unknown-linux-gnu
+        cargo build --release --bin icu4x-datagen --no-default-features --features bin,blob_exporter,blob_input,rayon,experimental_components --target x86_64-unknown-linux-gnu
+        cd ../..
+
+        cp target/aarch64-unknown-linux-gnu/release/icu4x-datagen bin/linux_arm64-datagen
+        cp target/riscv64gc-unknown-linux-gnu/release/icu4x-datagen bin/linux_riscv64-datagen
+        cp target/x86_64-unknown-linux-gnu/release/icu4x-datagen bin/linux_x64-datagen
+  
+    - name: Build Mac
+      if: matrix.os == 'macos-latest'
+      run: |
+        cd submodules/icu4x
+
+        mkdir bin
+
+        cd ffi/dart
+        dart pub get
+        cd ../..
+        dart run ffi/dart/tool/build_libs.dart bin/ios_arm ios_arm
+        dart run ffi/dart/tool/build_libs.dart bin/ios_arm64 ios_arm64
+        dart run ffi/dart/tool/build_libs.dart bin/ios_x64 ios_x64
+        dart run ffi/dart/tool/build_libs.dart bin/macos_arm64 macos_arm64
+        dart run ffi/dart/tool/build_libs.dart bin/macos_x64 macos_x64
+
+        cd provider/datagen # avoid global feature resolution
+        rustup target add aarch64-apple-darwin
+        cargo build --release --bin icu4x-datagen --no-default-features --features bin,blob_exporter,blob_input,rayon,experimental_components --target aarch64-apple-darwin
+        rustup target add x86_64-apple-darwin
+        cargo build --release --bin icu4x-datagen --no-default-features --features bin,blob_exporter,blob_input,rayon,experimental_components --target x86_64-apple-darwin
+        cd ../..
+
+        cp target/aarch64-apple-darwin/release/icu4x-datagen bin/macos_arm64-datagen
+        cp target/x86_64-apple-darwin/release/icu4x-datagen bin/macos_x64-datagen
+  
+    - name: Build Windows
+      if: matrix.os == 'windows-latest'
+      run: |
+        cd submodules/icu4x
+      
+        mkdir bin
+
+        cd ffi/dart
+        dart pub get
+        cd ../..
+        dart run ffi/dart/tool/build_libs.dart bin/windows_arm64 windows_arm64
+        dart run ffi/dart/tool/build_libs.dart bin/windows_ia32 windows_ia32
+        dart run ffi/dart/tool/build_libs.dart bin/windows_x64 windows_x64
+
+        cd provider/datagen # avoid global feature resolution
+        rustup target add aarch64-pc-windows-msvc
+        cargo build --release --bin icu4x-datagen --no-default-features --features bin,blob_exporter,blob_input,rayon,experimental_components --target aarch64-pc-windows-msvc
+        rustup target add x86_64-pc-windows-msvc
+        cargo build --release --bin icu4x-datagen --no-default-features --features bin,blob_exporter,blob_input,rayon,experimental_components --target x86_64-pc-windows-msvc
+        cd ../..
+
+        cp target/aarch64-pc-windows-msvc/release/icu4x-datagen.exe bin/windows_arm64-datagen.exe
+        cp target/x86_64-pc-windows-msvc/release/icu4x-datagen.exe bin/windows_x64-datagen.exe
+    
+    - name: Upload artifacts
+      uses: actions/upload-artifact@ef09cdac3e2d3e60d8ccadda691f4f1cec5035cb
+      with:
+        name: dart-${{matrix.os}}-libs
+        path: submodules/icu4x/bin
+  
+  release:
+    needs: dart-libs
+    runs-on: ubuntu-latest
+    if: github.event_name == 'push'
+    steps:
+      - name: Download binaries
+        uses: actions/download-artifact@c850b930e6ba138125429b7e5c93fc707a7f8427
+
+      - name: Display structure of downloaded files
+        run: ls -R
+
+      - name: Release
+        uses: softprops/action-gh-release@d99959edae48b5ffffd7b00da66dcdb0a33a52ee
+        with:
+          files: '**'
+          fail_on_unmatched_files: true
+          body: "Build artifacts for `package:intl4x`, based on ICU4X at ref ${{ env.icu_version }}"
diff --git a/submodules/icu4x b/submodules/icu4x
index 8387180c..9b905e2f 160000
--- a/submodules/icu4x
+++ b/submodules/icu4x
@@ -1 +1 @@
-Subproject commit 8387180cc2d2051a6cbafcfb967d45d6ff3ba495
+Subproject commit 9b905e2f1e85453e39c0eb23e68145f7d4aa8553