As part of our .NET unification, Xamarin.iOS and Xamarin.Android will become part of .NET 6 as .NET for iOS and .NET for Android. Because these bindings are projections of the SDKs shipped from Apple and Google, nothing changes there, however build tooling, target framework monikers, and runtime framework monikers will be updated to match all other .NET 6 workloads. Our commitment to keeping .NET developers up-to-date with the latest mobile SDKs is foundational to .NET MAUI and remains firm. When .NET 6 ships, we expect to ship a final release of Xamarin SDKs in their current form that will be serviced for a year. All modern work will at that time shift to .NET 6. 

Xamarin.Forms vs MAUI

Goodbye Xamarin, aloha Maui! 

Introducing .NET Multi-platform App UI
.NET MAUI simplifies the choices for .NET developers, providing a single stack that supports all modern workloads: Android, iOS, macOS, and Windows.
 

• .NET 5 provides two options of runtimes for users: the high-performance CoreCLR (for server and desktop applications), and the lightweight Mono (for mobile and WebAssembly). 

Today at .NET Conf 2019, we shared some exciting announcements for Xamarin and Visual Studio developers, including:

• XAML Hot Reload for Xamarin.Forms: Make changes to your XAML UI. See them reflected live on your emulator, simulator, or physical device.
• Xamarin Hot Restart: Test changes made to your app, including multi-file code edits, resources, and references, while using a much faster build and deploy cycle.
• iOS 13 and Android 10: Take advantage of the full power and performance of native platforms and APIs. Including iPadOS, dark mode, and foldable support. 

Developing Xamarin applications in Rider