Update SDK datestamps

Author: lbussell

README.sdk.md

@@ -65,25 +65,25 @@ Additionally, .NET Framework 4.8 and 4.8.1 can run apps that were built targetin
 
 Tag | Dockerfile
 ---------| ---------------
-4.8.1-20251014-windowsservercore-ltsc2025, 4.8.1-windowsservercore-ltsc2025, 4.8.1 | [Dockerfile](src/sdk/4.8.1/windowsservercore-ltsc2025/Dockerfile)
+4.8.1-20251111-windowsservercore-ltsc2025, 4.8.1-windowsservercore-ltsc2025, 4.8.1 | [Dockerfile](src/sdk/4.8.1/windowsservercore-ltsc2025/Dockerfile)
 
 ### Windows Server Core 2022 amd64 Tags
 
 Tag | Dockerfile
 ---------| ---------------
-4.8.1-20251014-windowsservercore-ltsc2022, 4.8.1-windowsservercore-ltsc2022, 4.8.1 | [Dockerfile](src/sdk/4.8.1/windowsservercore-ltsc2022/Dockerfile)
+4.8.1-20251111-windowsservercore-ltsc2022, 4.8.1-windowsservercore-ltsc2022, 4.8.1 | [Dockerfile](src/sdk/4.8.1/windowsservercore-ltsc2022/Dockerfile)
 
 ### Windows Server Core 2019 amd64 Tags
 
 Tag | Dockerfile
 ---------| ---------------
-4.8-20251014-windowsservercore-ltsc2019, 4.8-windowsservercore-ltsc2019, 4.8, latest | [Dockerfile](src/sdk/4.8/windowsservercore-ltsc2019/Dockerfile)
+4.8-20251111-windowsservercore-ltsc2019, 4.8-windowsservercore-ltsc2019, 4.8, latest | [Dockerfile](src/sdk/4.8/windowsservercore-ltsc2019/Dockerfile)
 
 ### Windows Server Core 2016 amd64 Tags
 
 Tag | Dockerfile
 ---------| ---------------
-4.8-20251014-windowsservercore-ltsc2016, 4.8-windowsservercore-ltsc2016, 4.8, latest | [Dockerfile](src/sdk/4.8/windowsservercore-ltsc2016/Dockerfile)
+4.8-20251111-windowsservercore-ltsc2016, 4.8-windowsservercore-ltsc2016, 4.8, latest | [Dockerfile](src/sdk/4.8/windowsservercore-ltsc2016/Dockerfile)
 <!--End of generated tags-->
 
 *Tags not listed in the table above are not supported. See the [Supported Tags Policy](https://github.com/dotnet/dotnet-docker/blob/main/documentation/supported-tags.md).

manifest.datestamps.json

@@ -1,9 +1,10 @@
 {
   "variables": {
-    "CurrentReleaseDateStamp": "20251014",
-    "RuntimeReleaseDateStamp": "$(CurrentReleaseDateStamp)",
-    "AspnetReleaseDateStamp": "$(CurrentReleaseDateStamp)",
-    "WcfReleaseDateStamp": "$(CurrentReleaseDateStamp)",
+    "CurrentReleaseDateStamp": "20251111",
+    "PreviousReleaseDateStamp": "20251014",
+    "RuntimeReleaseDateStamp": "$(PreviousReleaseDateStamp)",
+    "AspnetReleaseDateStamp": "$(PreviousReleaseDateStamp)",
+    "WcfReleaseDateStamp": "$(PreviousReleaseDateStamp)",
     "SdkReleaseDateStamp": "$(CurrentReleaseDateStamp)",
 
     "4.8-ltsc2016-Runtime-DateStamp": "$(RuntimeReleaseDateStamp)",