Update intro.md (#13970)

* Update intro.md

* Update intro.md

* Update intro.md

* Update intro.md

Author: Rick-Anderson

aspnetcore/data/ef-mvc/intro.md

@@ -8,9 +8,16 @@ ms.date: 02/06/2019
 ms.topic: tutorial
 uid: data/ef-mvc/intro
 ---
-
 # Tutorial: Get started with EF Core in an ASP.NET MVC web app
 
+::: moniker range=">= aspnetcore-3.0"
+
+This tutorial has **not** been updated to ASP.NET Core 3.0. The [Razor Pages version](xref:data/ef-rp/intro) has been updated. For information on when this might be updated, see [this GitHub issue](https://github.com/aspnet/AspNetCore.Docs/issues/13920).
+
+::: moniker-end
+
+::: moniker range="< aspnetcore-3.0"
+
 [!INCLUDE [RP better than MVC](~/includes/RP-EF/rp-over-mvc.md)]
 
 The Contoso University sample web application demonstrates how to create ASP.NET Core 2.2 MVC web applications using Entity Framework (EF) Core 2.2 and Visual Studio 2017 or 2019.
@@ -373,3 +380,5 @@ Advance to the next tutorial to learn how to perform basic CRUD (create, read, u
 
 > [!div class="nextstepaction"]
 > [Implement basic CRUD functionality](crud.md)
+
+::: moniker-end