Xamarin.iOS & Xamarin.Mac Files

[!NOTE] Xcode 16.4 is required with this release. Xcode 16.4 requires macOS 15.3+.

This is a servicing release to the previous .NET 9 release.

Note: these are the base SDKs that add support for the platforms in question, for MAUI (which is built on top of our SDKs), go here instead: https://docs.microsoft.com/en-us/dotnet/maui/.

Versions

This release consists of the following versions:

• iOS: 18.5.9214
• tvOS: 18.5.9214
• macOS: 15.5.9214
• Mac Catalyst: 18.5.9214

Installation

You can use workload set version 9.0.303.1 in order to install these versions of the SDKs.

Please make sure to be using the latest 9.0.303 before issuing the dotnet workload install command below. You can validate your installed dotnet version using dotnet --version do make sure it shows 9.0.303 or greater before proceeding.

:::sh
dotnet workload install <workload id(s)> --version 9.0.303.1

Available workload ids

• ios
• tvos
• macos
• maccatalyst
• android (see https://github.com/dotnet/android)
• maui (see https://github.com/dotnet/maui)

Example command installing all listed workloads.

:::sh
dotnet workload install ios tvos macos maccatalyst maui android --version 9.0.303.1

You can use dotnet workload --info to validate the workload versions installed in your system.

What's Changed

• [msbuild] Improve diagnostics when we fail to process an xcframework. by @rolfbjarne in https://github.com/dotnet/macios/pull/23269
• [msbuild] Merge System.Formats.Asn1.dll ito the task assembly as well. by @rolfbjarne in https://github.com/dotnet/macios/pull/23315
• [src/runtime] Rework how we store data in NSObject. Fixes [#23284]. by @rolfbjarne in https://github.com/dotnet/macios/pull/23324

Full Changelog: https://github.com/dotnet/macios/compare/dotnet-9.0.1xx-xcode16.4-9207...dotnet-9.0.1xx-xcode16.5-9214