Changes can't be applied to Blazor WebAssembly apps yet .NET MAUI Blazor Apps Standing for .NET Multi-platform App UI, this has been described as an evolution of the mobile-centric Xamarin.Forms, ...
Along with initial support for Hot Reload functionality, the new .NET 6 Preview 3 also introduces BlazorWebView controls for Windows Presentation Foundation (WPF) and Windows Forms (WinForms) apps.