Update README.md

README.md

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 # exInstaller
 
+**NOTICE** As of the 11th November 2023, this repository is now a public archive.
+
+## Replaced by EX-Installer
+
+As announced on the 2nd of July 2023, the DCC-EX team have released a new, Python based, cross-platform installer: [EX-Installer](https://dcc-ex.com/news/posts/20230702.html)
+
+There is a new GitHub repository for [EX-Installer](https://github.com/DCC-EX/EX-Installer), and further information can also be found on our [website](https://dcc-ex.com).
+
+## exInstaller
+
 ![.NET Core](https://github.com/DCC-EX/exInstaller/workflows/.NET%20Core/badge.svg)
 
 This project provides a "one-click" installer for DCC++. At runtime, you can select either the "Classic" version or the new "DCC++ EX" version.
@@ -37,4 +47,4 @@ This project provides a "one-click" installer for DCC++. At runtime, you can sel
 3. If you use Visual Studio open the exInstaller.sln if not open folder with your favorite IDE or text editor
 4. Make changes where you want.
 5. To compile you can use a shell window and type `dotnet build` and it should auto build for your platform a debug version of the project. 
-6. Run and test your changes.
+6. Run and test your changes.