diff --git a/dev/bots/prepare_package.dart b/dev/bots/prepare_package.dart
index 01a5625104..0b9a988e84 100644
--- a/dev/bots/prepare_package.dart
+++ b/dev/bots/prepare_package.dart
@@ -26,6 +26,7 @@ const String baseUrl = 'https://storage.googleapis.com/flutter_infra_release';
 const int shortCacheSeconds = 60;
 const String frameworkVersionTag = 'frameworkVersionFromGit';
 const String dartVersionTag = 'dartSdkVersion';
+const String dartTargetArchTag = 'dartTargetArch';
 
 /// Exception class for when a process fails to run, so we can catch
 /// it and provide something more readable than a stack trace.
@@ -191,32 +192,72 @@ class ArchiveCreator {
   ///
   /// If subprocessOutput is true, then output from processes invoked during
   /// archive creation is echoed to stderr and stdout.
-  ArchiveCreator(
-    this.tempDir,
-    this.outputDir,
-    this.revision,
-    this.branch, {
-    this.strict = true,
+  factory ArchiveCreator(
+    Directory tempDir,
+    Directory outputDir,
+    String revision,
+    Branch branch, {
+    bool strict = true,
     ProcessManager? processManager,
     bool subprocessOutput = true,
-    this.platform = const LocalPlatform(),
+    Platform platform = const LocalPlatform(),
     HttpReader? httpReader,
-  })  : assert(revision.length == 40),
-        flutterRoot = Directory(path.join(tempDir.path, 'flutter')),
-        httpReader = httpReader ?? http.readBytes,
-        _processRunner = ProcessRunner(
-          processManager: processManager,
-          subprocessOutput: subprocessOutput,
-          platform: platform,
-        ) {
-    _flutter = path.join(
+  }) {
+    final Directory flutterRoot = Directory(path.join(tempDir.path, 'flutter'));
+    final ProcessRunner processRunner = ProcessRunner(
+      processManager: processManager,
+      subprocessOutput: subprocessOutput,
+      platform: platform,
+    )..environment['PUB_CACHE'] = path.join(
+      flutterRoot.absolute.path, '.pub-cache',
+    );
+    final String flutterExecutable = path.join(
       flutterRoot.absolute.path,
       'bin',
       'flutter',
     );
-    _processRunner.environment['PUB_CACHE'] = path.join(flutterRoot.absolute.path, '.pub-cache');
+    final String dartExecutable = path.join(
+      flutterRoot.absolute.path,
+      'bin',
+      'cache',
+      'dart-sdk',
+      'bin',
+      'dart',
+    );
+
+    return ArchiveCreator._(
+      tempDir: tempDir,
+      platform: platform,
+      flutterRoot: flutterRoot,
+      outputDir: outputDir,
+      revision: revision,
+      branch: branch,
+      strict: strict,
+      processRunner: processRunner,
+      httpReader: httpReader ?? http.readBytes,
+      flutterExecutable: flutterExecutable,
+      dartExecutable: dartExecutable,
+    );
   }
 
+  ArchiveCreator._({
+    required this.tempDir,
+    required this.platform,
+    required this.flutterRoot,
+    required this.outputDir,
+    required this.revision,
+    required this.branch,
+    required this.strict,
+    required ProcessRunner processRunner,
+    required this.httpReader,
+    required String flutterExecutable,
+    required String dartExecutable,
+  }) :
+    assert(revision.length == 40),
+    _processRunner = processRunner,
+    _flutter = flutterExecutable,
+    _dart = dartExecutable;
+
   /// The platform to use for the environment and determining which
   /// platform we're running on.
   final Platform platform;
@@ -252,17 +293,25 @@ class ArchiveCreator {
   /// [http.readBytes].
   final HttpReader httpReader;
 
-  late File _outputFile;
   final Map<String, String> _version = <String, String>{};
   late String _flutter;
+  late String _dart;
+
+  late final Future<String> _dartArch = (() async {
+    // Parse 'arch' out of a string like '... "os_arch"\n'.
+    return (await _runDart(<String>['--version']))
+        .trim().split(' ').last.replaceAll('"', '').split('_')[1];
+  })();
 
   /// Get the name of the channel as a string.
   String get branchName => getBranchName(branch);
 
   /// Returns a default archive name when given a Git revision.
   /// Used when an output filename is not given.
-  String get _archiveName {
+  Future<String> get _archiveName async {
     final String os = platform.operatingSystem.toLowerCase();
+    // Include the intended host archetecture in the file name for non-x64.
+    final String arch = await _dartArch == 'x64' ? '' : '${await _dartArch}_';
     // We don't use .tar.xz on Mac because although it can unpack them
     // on the command line (with tar), the "Archive Utility" that runs
     // when you double-click on them just does some crazy behavior (it
@@ -271,7 +320,7 @@ class ArchiveCreator {
     // unpacking it!) So, we use .zip for Mac, and the files are about
     // 220MB larger than they need to be. :-(
     final String suffix = platform.isLinux ? 'tar.xz' : 'zip';
-    return 'flutter_${os}_${_version[frameworkVersionTag]}-$branchName.$suffix';
+    return 'flutter_${os}_$arch${_version[frameworkVersionTag]}-$branchName.$suffix';
   }
 
   /// Checks out the flutter repo and prepares it for other operations.
@@ -289,12 +338,15 @@ class ArchiveCreator {
   /// Performs all of the steps needed to create an archive.
   Future<File> createArchive() async {
     assert(_version.isNotEmpty, 'Must run initializeRepo before createArchive');
-    _outputFile = File(path.join(outputDir.absolute.path, _archiveName));
+    final File outputFile = File(path.join(
+      outputDir.absolute.path,
+      await _archiveName,
+    ));
     await _installMinGitIfNeeded();
     await _populateCaches();
     await _validate();
-    await _archiveFiles(_outputFile);
-    return _outputFile;
+    await _archiveFiles(outputFile);
+    return outputFile;
   }
 
   /// Validates the integrity of the release package.
@@ -307,14 +359,6 @@ class ArchiveCreator {
       return;
     }
     // Validate that the dart binary is codesigned
-    final String dartPath = path.join(
-      flutterRoot.absolute.path,
-      'bin',
-      'cache',
-      'dart-sdk',
-      'bin',
-      'dart',
-    );
     try {
       // TODO(fujino): Use the conductor https://github.com/flutter/flutter/issues/81701
       await _processRunner.runProcess(
@@ -322,13 +366,13 @@ class ArchiveCreator {
           'codesign',
           '-vvvv',
           '--check-notarization',
-          dartPath,
+          _dart,
         ],
         workingDirectory: flutterRoot,
       );
     } on PreparePackageException catch (e) {
       throw PreparePackageException(
-        'The binary $dartPath was not codesigned!\n${e.message}',
+        'The binary $_dart was not codesigned!\n${e.message}',
       );
     }
   }
@@ -370,6 +414,7 @@ class ArchiveCreator {
     final Map<String, dynamic> result = json.decode(versionJson) as Map<String, dynamic>;
     result.forEach((String key, dynamic value) => versionMap[key] = value.toString());
     versionMap[frameworkVersionTag] = gitVersion;
+    versionMap[dartTargetArchTag] = await _dartArch;
     return versionMap;
   }
 
@@ -464,6 +509,13 @@ class ArchiveCreator {
     }
   }
 
+  Future<String> _runDart(List<String> args, {Directory? workingDirectory}) {
+    return _processRunner.runProcess(
+      <String>[_dart, ...args],
+      workingDirectory: workingDirectory ?? flutterRoot,
+    );
+  }
+
   Future<String> _runFlutter(List<String> args, {Directory? workingDirectory}) {
     return _processRunner.runProcess(
       <String>[_flutter, ...args],
@@ -623,6 +675,7 @@ class ArchivePublisher {
     newEntry['channel'] = branchName;
     newEntry['version'] = version[frameworkVersionTag];
     newEntry['dart_sdk_version'] = version[dartVersionTag];
+    newEntry['dart_sdk_arch'] = version[dartTargetArchTag];
     newEntry['release_date'] = DateTime.now().toUtc().toIso8601String();
     newEntry['archive'] = destinationArchivePath;
     newEntry['sha256'] = await _getChecksum(outputFile);
@@ -849,8 +902,16 @@ Future<void> main(List<String> rawArguments) async {
     }
   }
 
+  final bool publish = parsedArguments['publish'] as bool;
+  final bool dryRun = parsedArguments['dry_run'] as bool;
   final Branch branch = fromBranchName(parsedArguments['branch'] as String);
-  final ArchiveCreator creator = ArchiveCreator(tempDir, outputDir, revision, branch, strict: parsedArguments['publish'] as bool);
+  final ArchiveCreator creator = ArchiveCreator(
+    tempDir,
+    outputDir,
+    revision,
+    branch,
+    strict: publish && !dryRun,
+  );
   int exitCode = 0;
   late String message;
   try {
@@ -863,7 +924,7 @@ Future<void> main(List<String> rawArguments) async {
         branch,
         version,
         outputFile,
-        parsedArguments['dry_run'] as bool,
+        dryRun,
       );
       await publisher.publishArchive(parsedArguments['force'] as bool);
     }
diff --git a/dev/bots/test/prepare_package_test.dart b/dev/bots/test/prepare_package_test.dart
index 2c4e9cd512..3b3c3280a6 100644
--- a/dev/bots/test/prepare_package_test.dart
+++ b/dev/bots/test/prepare_package_test.dart
@@ -82,6 +82,7 @@ void main() {
       final List<List<String>> args = <List<String>>[];
       final List<Map<Symbol, dynamic>> namedArgs = <Map<Symbol, dynamic>>[];
       late String flutter;
+      late String dart;
 
       Future<Uint8List> fakeHttpReader(Uri url, {Map<String, String>? headers}) {
         return Future<Uint8List>.value(Uint8List(0));
@@ -106,7 +107,10 @@ void main() {
           platform: platform,
           httpReader: fakeHttpReader,
         );
-        flutter = path.join(creator.flutterRoot.absolute.path, 'bin', 'flutter');
+        flutter = path.join(creator.flutterRoot.absolute.path,
+          'bin', 'flutter');
+        dart = path.join(creator.flutterRoot.absolute.path,
+          'bin', 'cache', 'dart-sdk', 'bin', 'dart');
       });
 
       tearDown(() async {
@@ -127,6 +131,9 @@ void main() {
             ProcessResult(0, 0, '{"dartSdkVersion": "3.2.1"}', ''),
             ProcessResult(0, 0, '{"dartSdkVersion": "3.2.1"}', ''),
           ],
+          '$dart --version': <ProcessResult>[
+            ProcessResult(0, 0, 'Dart SDK version: 2.17.0-63.0.dev (dev) (Wed Jan 26 03:48:52 2022 -0800) on "${platformName}_x64"', ''),
+          ],
           if (platform.isWindows) '7za x ${path.join(tempDir.path, 'mingit.zip')}': null,
           '$flutter doctor': null,
           '$flutter update-packages': null,
@@ -160,6 +167,56 @@ void main() {
             ProcessResult(0, 0, '{"dartSdkVersion": "3.2.1"}', ''),
             ProcessResult(0, 0, '{"dartSdkVersion": "3.2.1"}', ''),
           ],
+          '$dart --version': <ProcessResult>[
+            ProcessResult(0, 0, 'Dart SDK version: 2.17.0-63.0.dev (dev) (Wed Jan 26 03:48:52 2022 -0800) on "${platformName}_x64"', ''),
+          ],
+          if (platform.isWindows) '7za x ${path.join(tempDir.path, 'mingit.zip')}': null,
+          '$flutter doctor': null,
+          '$flutter update-packages': null,
+          '$flutter precache': null,
+          '$flutter ide-config': null,
+          '$flutter create --template=app ${createBase}app': null,
+          '$flutter create --template=package ${createBase}package': null,
+          '$flutter create --template=plugin ${createBase}plugin': null,
+          'git clean -f -x -- **/.packages': null,
+          'git clean -f -x -- **/.dart_tool/': null,
+          if (platform.isMacOS) 'codesign -vvvv --check-notarization ${path.join(tempDir.path, 'flutter', 'bin', 'cache', 'dart-sdk', 'bin', 'dart')}': null,
+          if (platform.isWindows) 'attrib -h .git': null,
+          if (platform.isWindows) '7za a -tzip -mx=9 $archiveName flutter': null
+          else if (platform.isMacOS) 'zip -r -9 --symlinks $archiveName flutter': null
+          else if (platform.isLinux) 'tar cJf $archiveName flutter': null,
+        };
+        processManager.addCommands(convertResults(calls));
+        creator = ArchiveCreator(
+          tempDir,
+          tempDir,
+          testRef,
+          Branch.dev,
+          processManager: processManager,
+          subprocessOutput: false,
+          platform: platform,
+          httpReader: fakeHttpReader,
+        );
+        await creator.initializeRepo();
+        await creator.createArchive();
+      });
+
+      test('adds the arch name to the archive for non-x64', () async {
+        final String createBase = path.join(tempDir.absolute.path, 'create_');
+        final String archiveName = path.join(tempDir.absolute.path,
+            'flutter_${platformName}_arm64_v1.2.3-dev${platform.isLinux ? '.tar.xz' : '.zip'}');
+        final Map<String, List<ProcessResult>?> calls = <String, List<ProcessResult>?>{
+          'git clone -b dev https://chromium.googlesource.com/external/github.com/flutter/flutter': null,
+          'git reset --hard $testRef': null,
+          'git remote set-url origin https://github.com/flutter/flutter.git': null,
+          'git describe --tags --exact-match $testRef': <ProcessResult>[ProcessResult(0, 0, 'v1.2.3', '')],
+          '$flutter --version --machine': <ProcessResult>[
+            ProcessResult(0, 0, '{"dartSdkVersion": "3.2.1"}', ''),
+            ProcessResult(0, 0, '{"dartSdkVersion": "3.2.1"}', ''),
+          ],
+          '$dart --version': <ProcessResult>[
+            ProcessResult(0, 0, 'Dart SDK version: 2.17.0-63.0.dev (dev) (Wed Jan 26 03:48:52 2022 -0800) on "${platformName}_arm64"', ''),
+          ],
           if (platform.isWindows) '7za x ${path.join(tempDir.path, 'mingit.zip')}': null,
           '$flutter doctor': null,
           '$flutter update-packages': null,
@@ -214,6 +271,9 @@ void main() {
             ProcessResult(0, 0, '{"dartSdkVersion": "3.2.1"}', ''),
             ProcessResult(0, 0, '{"dartSdkVersion": "3.2.1"}', ''),
           ],
+          '$dart --version': <ProcessResult>[
+            ProcessResult(0, 0, 'Dart SDK version: 2.17.0-63.0.dev (dev) (Wed Jan 26 03:48:52 2022 -0800) on "${platformName}_x64"', ''),
+          ],
           if (platform.isWindows) '7za x ${path.join(tempDir.path, 'mingit.zip')}': null,
           '$flutter doctor': null,
           '$flutter update-packages': null,
@@ -260,6 +320,9 @@ void main() {
             ProcessResult(0, 0, '{"dartSdkVersion": "3.2.1"}', ''),
             ProcessResult(0, 0, '{"dartSdkVersion": "3.2.1"}', ''),
           ],
+          '$dart --version': <ProcessResult>[
+            ProcessResult(0, 0, 'Dart SDK version: 2.17.0-63.0.dev (dev) (Wed Jan 26 03:48:52 2022 -0800) on "${platformName}_x64"', ''),
+          ],
           if (platform.isWindows) '7za x ${path.join(tempDir.path, 'mingit.zip')}': null,
           '$flutter doctor': null,
           '$flutter update-packages': null,
@@ -378,7 +441,11 @@ void main() {
           tempDir,
           testRef,
           Branch.stable,
-          <String, String>{'frameworkVersionFromGit': 'v1.2.3', 'dartSdkVersion': '3.2.1'},
+          <String, String>{
+            'frameworkVersionFromGit': 'v1.2.3',
+            'dartSdkVersion': '3.2.1',
+            'dartTargetArch': 'x64',
+          },
           outputFile,
           false,
           processManager: processManager,
@@ -416,6 +483,85 @@ void main() {
         expect(contents, equals(encoder.convert(jsonData)));
       });
 
+      test('contains Dart SDK version info', () async {
+        final String archivePath = path.join(tempDir.absolute.path, archiveName);
+        final String jsonPath = path.join(tempDir.absolute.path, releasesName);
+        final String gsJsonPath = 'gs://flutter_infra_release/releases/$releasesName';
+        final String releasesJson = '''
+{
+  "base_url": "https://storage.googleapis.com/flutter_infra_release/releases",
+  "current_release": {
+    "beta": "3ea4d06340a97a1e9d7cae97567c64e0569dcaa2",
+    "dev": "5a58b36e36b8d7aace89d3950e6deb307956a6a0"
+  },
+  "releases": [
+    {
+      "hash": "5a58b36e36b8d7aace89d3950e6deb307956a6a0",
+      "channel": "dev",
+      "version": "v0.2.3",
+      "release_date": "2018-03-20T01:47:02.851729Z",
+      "archive": "dev/$platformName/flutter_${platformName}_v0.2.3-dev.zip",
+      "sha256": "4fe85a822093e81cb5a66c7fc263f68de39b5797b294191b6d75e7afcc86aff8"
+    },
+    {
+      "hash": "b9bd51cc36b706215915711e580851901faebb40",
+      "channel": "beta",
+      "version": "v0.2.2",
+      "release_date": "2018-03-16T18:48:13.375013Z",
+      "archive": "dev/$platformName/flutter_${platformName}_v0.2.2-dev.zip",
+      "sha256": "6073331168cdb37a4637a5dc073d6a7ef4e466321effa2c529fa27d2253a4d4b"
+    },
+    {
+      "hash": "$testRef",
+      "channel": "stable",
+      "version": "v0.0.0",
+      "release_date": "2018-03-20T01:47:02.851729Z",
+      "archive": "stable/$platformName/flutter_${platformName}_v0.0.0-dev.zip",
+      "sha256": "5dd34873b3a3e214a32fd30c2c319a0f46e608afb72f0d450b2d621a6d02aebd"
+    }
+  ]
+}
+''';
+        File(jsonPath).writeAsStringSync(releasesJson);
+        File(archivePath).writeAsStringSync('archive contents');
+        final Map<String, List<ProcessResult>?> calls = <String, List<ProcessResult>?>{
+          // This process fails because the file does NOT already exist
+          '$gsutilCall -- stat $gsArchivePath': <ProcessResult>[ProcessResult(0, 1, '', '')],
+          '$gsutilCall -- rm $gsArchivePath': null,
+          '$gsutilCall -- -h Content-Type:$archiveMime cp $archivePath $gsArchivePath': null,
+          '$gsutilCall -- cp $gsJsonPath $jsonPath': null,
+          '$gsutilCall -- rm $gsJsonPath': null,
+          '$gsutilCall -- -h Content-Type:application/json -h Cache-Control:max-age=60 cp $jsonPath $gsJsonPath': null,
+        };
+        processManager.addCommands(convertResults(calls));
+        final File outputFile = File(path.join(tempDir.absolute.path, archiveName));
+        outputFile.createSync();
+        assert(tempDir.existsSync());
+        final ArchivePublisher publisher = ArchivePublisher(
+          tempDir,
+          testRef,
+          Branch.stable,
+          <String, String>{
+            'frameworkVersionFromGit': 'v1.2.3',
+            'dartSdkVersion': '3.2.1',
+            'dartTargetArch': 'x64',
+          },
+          outputFile,
+          false,
+          processManager: processManager,
+          subprocessOutput: false,
+          platform: platform,
+        );
+        assert(tempDir.existsSync());
+        await publisher.publishArchive();
+
+        final File releaseFile = File(jsonPath);
+        expect(releaseFile.existsSync(), isTrue);
+        final String contents = releaseFile.readAsStringSync();
+        expect(contents, contains('"dart_sdk_version": "3.2.1"'));
+        expect(contents, contains('"dart_sdk_arch": "x64"'));
+      });
+
       test('updates base_url from old bucket to new bucket', () async {
         final String archivePath = path.join(tempDir.absolute.path, archiveName);
         final String jsonPath = path.join(tempDir.absolute.path, releasesName);
@@ -474,7 +620,11 @@ void main() {
           tempDir,
           testRef,
           Branch.stable,
-          <String, String>{'frameworkVersionFromGit': 'v1.2.3', 'dartSdkVersion': '3.2.1'},
+          <String, String>{
+            'frameworkVersionFromGit': 'v1.2.3',
+            'dartSdkVersion': '3.2.1',
+            'dartTargetArch': 'x64',
+          },
           outputFile,
           false,
           processManager: processManager,
@@ -498,7 +648,11 @@ void main() {
           tempDir,
           testRef,
           Branch.stable,
-          <String, String>{'frameworkVersionFromGit': 'v1.2.3', 'dartSdkVersion': '3.2.1'},
+          <String, String>{
+            'frameworkVersionFromGit': 'v1.2.3',
+            'dartSdkVersion': '3.2.1',
+            'dartTargetArch': 'x64',
+          },
           outputFile,
           false,
           processManager: processManager,
@@ -520,7 +674,11 @@ void main() {
           tempDir,
           testRef,
           Branch.stable,
-          <String, String>{'frameworkVersionFromGit': 'v1.2.3', 'dartSdkVersion': '3.2.1'},
+          <String, String>{
+            'frameworkVersionFromGit': 'v1.2.3',
+            'dartSdkVersion': '3.2.1',
+            'dartTargetArch': 'x64',
+          },
           outputFile,
           false,
           processManager: processManager,