It ships as part of .NET and is fully supported by Microsoft. As of .NET 10 (LTS), MAUI is distributed via NuGet packages for finer dependency control and supports Native AOT, .NET Aspire integration, ...
Microsoft has revealed it will support Visual Basic on .NET 5 but also that it has no plans to evolve the language. As Microsoft's .NET team notes, Visual Basic on .NET Core only supported Class ...