Release Note updates for WinAppSDK 2.0 Experimental 1 (#5873)

* Early Merged

* add nuget versions and release notes

* correcting links

* fixing ml link

* Addressing feedback

* rm ui.designer from api changelist

---------

Co-authored-by: Roy <[email protected]>

Author: agniuks

hub/apps/toc.yml

@@ -637,6 +637,8 @@ items:
                             href: windows-app-sdk/release-notes-archive/preview-channel-1.0.md
                       - name: Experimental channel release notes
                         items:
+                          - name: Windows App SDK 1.8
+                            href: windows-app-sdk/release-notes-archive/experimental-channel-1-8.md
                           - name: Windows App SDK 1.7
                             href: windows-app-sdk/release-notes-archive/experimental-channel-1.7.md
                           - name: Windows App SDK 1.6

hub/apps/windows-app-sdk/downloads-archive.md

@@ -161,6 +161,14 @@ To learn more, see the [Windows App SDK release channels](release-channels.md) a
 
 ## Experimental releases
 
+### Windows App SDK 1.8 Experimental
+| Version                                                                                                                                                                                                                                                                                                                                                                                                | Runtime downloads                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
+| ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| [1.8 Experimental4 (1.8.250702007-experimental4) ](/windows/apps/windows-app-sdk/experimental-channel#version-18-experimental-180-experimental4) <br/> 07/08/2025 <br/> [Release notes](/windows/apps/windows-app-sdk/experimental-channel#version-18-experimental-180-experimental4) <br/> [Source](https://github.com/microsoft/microsoft-ui-xaml/releases/tag/winui3%2Frelease%2F1.8-experimental4) | [Installer (x64)](https://aka.ms/windowsappsdk/1.8/1.8.250702007-experimental4/windowsappruntimeinstall-x64.exe) <br/> [Installer (x86)](https://aka.ms/windowsappsdk/1.8/1.8.250702007-experimental4/windowsappruntimeinstall-x86.exe) <br/> [Installer (arm64)](https://aka.ms/windowsappsdk/1.8/1.8.250702007-experimental4/windowsappruntimeinstall-arm64.exe) <br/> [Redistributable](https://aka.ms/windowsappsdk/1.8/1.8.250702007-experimental4/Microsoft.WindowsAppRuntime.Redist.1.8.zip) |
+| [1.8 Experimental3 (1.8.250610002-experimental3) ](/windows/apps/windows-app-sdk/experimental-channel#version-18-experimental-180-experimental3) <br/> 06/12/2025 <br/> [Release notes](/windows/apps/windows-app-sdk/experimental-channel#version-18-experimental-180-experimental3) <br/> [Source](https://github.com/microsoft/microsoft-ui-xaml/releases/tag/winui3%2Frelease%2F1.8-experimental3) | [Installer (x64)](https://aka.ms/windowsappsdk/1.8/1.8.250610002-experimental3/windowsappruntimeinstall-x64.exe) <br/> [Installer (x86)](https://aka.ms/windowsappsdk/1.8/1.8.250610002-experimental3/windowsappruntimeinstall-x86.exe) <br/> [Installer (arm64)](https://aka.ms/windowsappsdk/1.8/1.8.250610002-experimental3/windowsappruntimeinstall-arm64.exe) <br/> [Redistributable](https://aka.ms/windowsappsdk/1.8/1.8.250610002-experimental3/Microsoft.WindowsAppRuntime.Redist.1.8.zip) |
+| [1.8 Experimental2 (1.8.250515001-experimental2) ](/windows/apps/windows-app-sdk/experimental-channel#version-18-experimental-180-experimental2) <br/> 05/19/2025 <br/> [Release notes](/windows/apps/windows-app-sdk/experimental-channel#version-18-experimental-180-experimental2) <br/> [Source](https://github.com/microsoft/microsoft-ui-xaml/releases/tag/winui3%2Frelease%2F1.8-experimental2) | [Installer (x64)](https://aka.ms/windowsappsdk/1.8/1.8.250515001-experimental2/windowsappruntimeinstall-x64.exe) <br/> [Installer (x86)](https://aka.ms/windowsappsdk/1.8/1.8.250515001-experimental2/windowsappruntimeinstall-x86.exe) <br/> [Installer (arm64)](https://aka.ms/windowsappsdk/1.8/1.8.250515001-experimental2/windowsappruntimeinstall-arm64.exe) <br/> [Redistributable](https://aka.ms/windowsappsdk/1.8/1.8.250515001-experimental2/Microsoft.WindowsAppRuntime.Redist.1.8.zip) |
+| [1.8 Experimental1 (1.8.250410001-experimental1) ](/windows/apps/windows-app-sdk/experimental-channel#version-18-experimental-180-experimental1) <br/> 04/15/2025 <br/> [Release notes](/windows/apps/windows-app-sdk/experimental-channel#version-18-experimental-180-experimental1) <br/> [Source](https://github.com/microsoft/microsoft-ui-xaml/releases/tag/winui3%2Frelease%2F1.8-experimental1) | [Installer (x64)](https://aka.ms/windowsappsdk/1.8/1.8.250410001-experimental1/windowsappruntimeinstall-x64.exe) <br/> [Installer (x86)](https://aka.ms/windowsappsdk/1.8/1.8.250410001-experimental1/windowsappruntimeinstall-x86.exe) <br/> [Installer (arm64)](https://aka.ms/windowsappsdk/1.8/1.8.250410001-experimental1/windowsappruntimeinstall-arm64.exe) <br/> [Redistributable](https://aka.ms/windowsappsdk/1.8/1.8.250410001-experimental1/Microsoft.WindowsAppRuntime.Redist.1.8.zip) |
+
 ### Windows App SDK 1.7 Experimental
 
 | Version                                                                                                                                                                                                                                                                                                                                                                                                | Runtime downloads                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |

hub/apps/windows-app-sdk/downloads.md

@@ -42,13 +42,10 @@ This page provides links to the *latest* downloads of the [Windows App SDK](inde
 
 ## Experimental release
 
-###  Windows App SDK 1.8 Experimental
+###  Windows App SDK 2.0 Experimental
 | Version                                                                                                                                                                                                                                                                                                                                                                                                | Runtime downloads                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
 | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
-| [1.8 Experimental4 (1.8.250702007-experimental4) ](/windows/apps/windows-app-sdk/experimental-channel#version-18-experimental-180-experimental4) <br/> 07/08/2025 <br/> [Release notes](/windows/apps/windows-app-sdk/experimental-channel#version-18-experimental-180-experimental4) <br/> [Source](https://github.com/microsoft/microsoft-ui-xaml/releases/tag/winui3%2Frelease%2F1.8-experimental4) | [Installer (x64)](https://aka.ms/windowsappsdk/1.8/1.8.250702007-experimental4/windowsappruntimeinstall-x64.exe) <br/> [Installer (x86)](https://aka.ms/windowsappsdk/1.8/1.8.250702007-experimental4/windowsappruntimeinstall-x86.exe) <br/> [Installer (arm64)](https://aka.ms/windowsappsdk/1.8/1.8.250702007-experimental4/windowsappruntimeinstall-arm64.exe) <br/> [Redistributable](https://aka.ms/windowsappsdk/1.8/1.8.250702007-experimental4/Microsoft.WindowsAppRuntime.Redist.1.8.zip) |
-| [1.8 Experimental3 (1.8.250610002-experimental3) ](/windows/apps/windows-app-sdk/experimental-channel#version-18-experimental-180-experimental3) <br/> 06/12/2025 <br/> [Release notes](/windows/apps/windows-app-sdk/experimental-channel#version-18-experimental-180-experimental3) <br/> [Source](https://github.com/microsoft/microsoft-ui-xaml/releases/tag/winui3%2Frelease%2F1.8-experimental3) | [Installer (x64)](https://aka.ms/windowsappsdk/1.8/1.8.250610002-experimental3/windowsappruntimeinstall-x64.exe) <br/> [Installer (x86)](https://aka.ms/windowsappsdk/1.8/1.8.250610002-experimental3/windowsappruntimeinstall-x86.exe) <br/> [Installer (arm64)](https://aka.ms/windowsappsdk/1.8/1.8.250610002-experimental3/windowsappruntimeinstall-arm64.exe) <br/> [Redistributable](https://aka.ms/windowsappsdk/1.8/1.8.250610002-experimental3/Microsoft.WindowsAppRuntime.Redist.1.8.zip) |
-| [1.8 Experimental2 (1.8.250515001-experimental2) ](/windows/apps/windows-app-sdk/experimental-channel#version-18-experimental-180-experimental2) <br/> 05/19/2025 <br/> [Release notes](/windows/apps/windows-app-sdk/experimental-channel#version-18-experimental-180-experimental2) <br/> [Source](https://github.com/microsoft/microsoft-ui-xaml/releases/tag/winui3%2Frelease%2F1.8-experimental2) | [Installer (x64)](https://aka.ms/windowsappsdk/1.8/1.8.250515001-experimental2/windowsappruntimeinstall-x64.exe) <br/> [Installer (x86)](https://aka.ms/windowsappsdk/1.8/1.8.250515001-experimental2/windowsappruntimeinstall-x86.exe) <br/> [Installer (arm64)](https://aka.ms/windowsappsdk/1.8/1.8.250515001-experimental2/windowsappruntimeinstall-arm64.exe) <br/> [Redistributable](https://aka.ms/windowsappsdk/1.8/1.8.250515001-experimental2/Microsoft.WindowsAppRuntime.Redist.1.8.zip) |
-| [1.8 Experimental1 (1.8.250410001-experimental1) ](/windows/apps/windows-app-sdk/experimental-channel#version-18-experimental-180-experimental1) <br/> 04/15/2025 <br/> [Release notes](/windows/apps/windows-app-sdk/experimental-channel#version-18-experimental-180-experimental1) <br/> [Source](https://github.com/microsoft/microsoft-ui-xaml/releases/tag/winui3%2Frelease%2F1.8-experimental1) | [Installer (x64)](https://aka.ms/windowsappsdk/1.8/1.8.250410001-experimental1/windowsappruntimeinstall-x64.exe) <br/> [Installer (x86)](https://aka.ms/windowsappsdk/1.8/1.8.250410001-experimental1/windowsappruntimeinstall-x86.exe) <br/> [Installer (arm64)](https://aka.ms/windowsappsdk/1.8/1.8.250410001-experimental1/windowsappruntimeinstall-arm64.exe) <br/> [Redistributable](https://aka.ms/windowsappsdk/1.8/1.8.250410001-experimental1/Microsoft.WindowsAppRuntime.Redist.1.8.zip) |
+| [2.0 Experimental1 (2.0.250930001-experimental1) ](/windows/apps/windows-app-sdk/experimental-channel#version-20-experimental-200-experimental1) <br/> 10/02/2025 <br/> [Release notes](/windows/apps/windows-app-sdk/experimental-channel#version-20-experimental-200-experimental1) <br/> [Source](https://github.com/microsoft/microsoft-ui-xaml/releases/tag/winui3%2Frelease%2F2.0-experimental1) | [Installer (x64)](https://aka.ms/windowsappsdk/2.0/2.0.250930001-experimental1/windowsappruntimeinstall-x64.exe) <br/> [Installer (x86)](https://aka.ms/windowsappsdk/2.0/2.0.250930001-experimental1/windowsappruntimeinstall-x86.exe) <br/> [Installer (arm64)](https://aka.ms/windowsappsdk/2.0/2.0.250930001-experimental1/windowsappruntimeinstall-arm64.exe) <br/> [Redistributable](https://aka.ms/windowsappsdk/2.0/2.0.250930001-experimental1/Microsoft.WindowsAppRuntime.Redist.2.0.zip) |
 
 > [!NOTE]
 > For older releases, see the [Archive of Windows App SDK downloads](downloads-archive.md).