The .NET 6.0 Preview 5 releases are available for download here:

https://dotnet.microsoft.com/download/dotnet/6.0

.NET Multi-Platform App UI Workload Downloads

.NET 6 introduces Android, iOS, and macOS SDKs for developing native applications. These provide the foundational mobile and desktop pieces for the new .NET Multi-platform App UI. See dotnet/maui-samples for additional setup instructions and sample projects you can run today.

After installing the .NET SDK, you can install these platform SDKs using the dotnet workload install command:

$ dotnet workload install microsoft-android-sdk-full
$ dotnet workload install microsoft-ios-sdk-full
$ dotnet workload install microsoft-maccatalyst-sdk-full
$ dotnet workload install microsoft-macos-sdk-full
$ dotnet workload install microsoft-tvos-sdk-full

Visit .NET Documentation to learn about .NET, for building many different types of applications.