Today we're announcing the roadmap for the next major version of .NET Core, .NET Core 3.0, which will expand the supported workloads to Windows desktop, bringing Windows Presentation Foundation (WPF), Windows Forms (WinForms) and Universal Windows Platform (UWP) app frameworks to .NET Core.
This allows Windows desktop developers to take advantage of side-by-side install of their apps. That means that system-wide updates of .NET will not impact running applications.
Developers will also have the ability to share and easily integrate UI controls across all the major Windows desktop frameworks. This means that you can incorporate controls into your apps that make the most sense for your users as well as take a phased migration approach to modernizing the UI of your app. For instance, you will be able to host UWP controls like Edge, Media, and more in your WPF and Winforms applications.
This is a significant investment in bringing all Windows desktop developers forward to the latest innovations on the .NET Core platform. This does not change support for WinForms and WPF on the .NET Framework.
Source: Azure Roadmap