How to Download IOS 26 beta runtime simulator using "xcodebuild" tool?

Hi, does selecting the Xcode 26 beta and then running xcodebuild without the buildVersion work for this situation? Could you also send us a bug through the feedback request. Thank you!

sudo xcode-select -s <pathTo/Xcode26-Beta.app>
xcodebuild -version 
xcodebuild -downloadPlatform iOS -exportPath ~/Downloads/

That fails:
Finding content... Automatically resolved architecture variant for platform iOS as 'arm64'. Downloading iOS 26.0 Simulator (23A5287g) (arm64): Preparing to download...2025-07-21 18:01:24.029 xcodebuild[72642:29551464] DVTDownloadable: Download Failed. Downloadable: { architectures = ( arm64 ); authentication = none; category = simulator; contentType = cryptexDiskImage; dictionaryVersion = 2; downloadMethod = mobileAsset; fileSize = 8455792929; identifier = "com.apple.dmg.iPhoneSimulatorSDK26_0_b3_arm64"; isInternalContent = 0; isUserInitiated = 1; name = "iOS 26.0 Simulator (23A5287g)"; patchableFrom = ( ); platform = "com.apple.platform.iphoneos"; simulatorVersion = { buildUpdate = 23A5287g; version = "26.0"; }; version = "26.0.0.3"; }. Download failed as the server said it was a bad request. (Asset download for com.apple.MobileAsset.iOSSimulatorRuntime ae765f33068e7c552052dbff7b253622062c002e) Downloading iOS 26.0 Simulator (23A5287g) (arm64): Error: Error Domain=DVTDownloadsUtilitiesErrorDomain Code=-1 "Download failed as the server said it was a bad request. (Asset download for com.apple.MobileAsset.iOSSimulatorRuntime ae765f33068e7c552052dbff7b253622062c002e)" UserInfo={NSUnderlyingError=0x6000017ac3c0 {Error Domain=com.apple.MobileAssetError.Download Code=40 "Download failed as the server said it was a bad request. (Asset download for com.apple.MobileAsset.iOSSimulatorRuntime ae765f33068e7c552052dbff7b253622062c002e)" UserInfo={NSLocalizedDescription=Download failed as the server said it was a bad request. (Asset download for com.apple.MobileAsset.iOSSimulatorRuntime ae765f33068e7c552052dbff7b253622062c002e), checkConfiguration=true}}, NSLocalizedDescription=Download failed as the server said it was a bad request. (Asset download for com.apple.MobileAsset.iOSSimulatorRuntime ae765f33068e7c552052dbff7b253622062c002e), DetailedAssetAttributes=Failed downloading asset with attributes ({ Architectures = ( arm64 ); ArchiveDecryptionKey = "M0AuBybTqdCMDDDsLPgynigbi8UwKe6w6SBvMx9HzTk="; ArchiveID = "0WMWPV5J4BZGt+EhjKj86F+qNuAhvzpvfZxukbrECHM="; AssetFormat = AppleArchive; AssetType = "com.apple.MobileAsset.iOSSimulatorRuntime"; Build = 23A5287g; Ramp = 0; SimulatorVersion = "26.0"; "_CompressionAlgorithm" = AppleArchive; "_DownloadSize" = 8455716864; "_Measurement" = {length = 20, bytes = 0x65578831ce89fd4e7f141eada1abda706131d965}; "_Measurement-SHA256" = {length = 32, bytes = 0xd7bbad07 a2973660 d725c11c 5edfbdb2 ... fc07bbd6 84ae3380 }; "_MeasurementAlgorithm" = "SHA-1"; "_UnarchivedSize" = 8476626944; "__AssetDefaultGarbageCollectionBehavior" = NeverCollected; "__BaseURL" = "https://updates.cdn-apple.com/2025/mobileassets/043-58065/41777ED2-0F8E-4A66-914B-ACB3CE9852F1/"; "__CanUseLocalCacheServer" = 1; "__RelativePath" = "com_apple_MobileAsset_iOSSimulatorRuntime/4B2F9372-9C2B-43B6-969B-F732A46163BD.aar"; })}