diff --git a/src/SecurityInsights/SecurityInsights.Autorest/README.md b/src/SecurityInsights/SecurityInsights.Autorest/README.md
index d454dbdde483..ec2f030b9f2f 100644
--- a/src/SecurityInsights/SecurityInsights.Autorest/README.md
+++ b/src/SecurityInsights/SecurityInsights.Autorest/README.md
@@ -348,13 +348,13 @@ directive:
       subject: AutomationRule|Bookmark|DataConnector|Enrichment|EntityActivity|EntityInsight|EntityTimeline|Incident$|IncidentAlert|IncidentBookmark|IncidentEntity|Metadata|ThreatIntelligenceIndicatorMetric
     set:
       preview-announcement:
-        preview-message: "*****************************************************************************************\\r\\n* This cmdlet will undergo a breaking change in Az v15.0.0, to be released on November 19th 2025. *\\r\\n* At least one change applies to this cmdlet.                                                     *\\r\\n* See all possible breaking changes at https://go.microsoft.com/fwlink/?linkid=2333486            *\\r\\n**************************************************************************************************"
+        preview-message: "*****************************************************************************************\\r\\n* This cmdlet will undergo a breaking change in Az v16.0.0, to be released in May 2026. *\\r\\n* At least one change applies to this cmdlet.                                                     *\\r\\n* See all possible breaking changes at https://go.microsoft.com/fwlink/?linkid=2333486            *\\r\\n**************************************************************************************************"
   - where:
       verb: New|Update
       subject: AlertRule|AutomationRule|Bookmark|DataConnector|EntityQuery|Incident$
     set:
       preview-announcement:
-        preview-message: "*****************************************************************************************\\r\\n* This cmdlet will undergo a breaking change in Az v15.0.0, to be released on November 19th 2025. *\\r\\n* At least one change applies to this cmdlet.                                                     *\\r\\n* See all possible breaking changes at https://go.microsoft.com/fwlink/?linkid=2333486            *\\r\\n**************************************************************************************************"
+        preview-message: "*****************************************************************************************\\r\\n* This cmdlet will undergo a breaking change in Az v16.0.0, to be released in May 2026. *\\r\\n* At least one change applies to this cmdlet.                                                     *\\r\\n* See all possible breaking changes at https://go.microsoft.com/fwlink/?linkid=2333486            *\\r\\n**************************************************************************************************"
   - where:
       verb: Get
       subject: Enrichment
@@ -362,8 +362,8 @@ directive:
     set:
       breaking-change:
         deprecated-by-version: 4.0.0
-        deprecated-by-azversion: 15.0.0
-        change-effective-date: 2025/11/19
+        deprecated-by-azversion: 16.0.0
+        change-effective-date: 2026/05
   - where:
       verb: New
       subject: AutomationRule|Bookmark|BookmarkRelation|Incident$|IncidentComment|IncidentRelation|IncidentTeam|OnboardingState
@@ -371,6 +371,6 @@ directive:
     set:
       breaking-change:
         deprecated-by-version: 4.0.0
-        deprecated-by-azversion: 15.0.0
-        change-effective-date: 2025/11/19
+        deprecated-by-azversion: 16.0.0
+        change-effective-date: 2026/05
 ```
diff --git a/src/SecurityInsights/SecurityInsights.Autorest/docs/Az.SecurityInsights.md b/src/SecurityInsights/SecurityInsights.Autorest/docs/Az.SecurityInsights.md
index f7b0424abc11..63fcc39bfbb1 100644
--- a/src/SecurityInsights/SecurityInsights.Autorest/docs/Az.SecurityInsights.md
+++ b/src/SecurityInsights/SecurityInsights.Autorest/docs/Az.SecurityInsights.md
@@ -1,6 +1,6 @@
 ---
 Module Name: Az.SecurityInsights
-Module Guid: a632df01-f50e-49fb-b2de-e91a0090c840
+Module Guid: eef3d2bb-b7d6-4177-980b-338f71fa2682
 Download Help Link: https://learn.microsoft.com/powershell/module/az.securityinsights
 Help Version: 1.0.0.0
 Locale: en-US
diff --git a/src/SecurityInsights/SecurityInsights.Autorest/generate-info.json b/src/SecurityInsights/SecurityInsights.Autorest/generate-info.json
index ea70361ab2f1..4103d9097c74 100644
--- a/src/SecurityInsights/SecurityInsights.Autorest/generate-info.json
+++ b/src/SecurityInsights/SecurityInsights.Autorest/generate-info.json
@@ -1,3 +1,3 @@
 {
-  "generate_Id": "a062268b-a8f0-4e2a-a487-273786173c10"
+  "generate_Id": "8ce60ebe-4f3c-4615-9375-713ee5753a02"
 }
diff --git a/src/SecurityInsights/SecurityInsights.sln b/src/SecurityInsights/SecurityInsights.sln
index 02cf6cd4ec73..dbfa24db0674 100644
--- a/src/SecurityInsights/SecurityInsights.sln
+++ b/src/SecurityInsights/SecurityInsights.sln
@@ -21,7 +21,7 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SecurityInsights", "Securit
 EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "SecurityInsights.Autorest", "SecurityInsights.Autorest", "{1F2C7E28-510C-0414-601C-25083DE2C7DC}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Az.SecurityInsights", "..\..\generated\SecurityInsights\SecurityInsights.Autorest\Az.SecurityInsights.csproj", "{FB43BE68-D070-492C-BDED-018E03BF153D}"
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Az.SecurityInsights", "..\..\generated\SecurityInsights\SecurityInsights.Autorest\Az.SecurityInsights.csproj", "{51E280D2-C9B9-4675-9E7C-BE04515BE3B6}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -117,18 +117,18 @@ Global
 		{F74A1659-4994-47CB-A786-DF83675AD4DF}.Release|x64.Build.0 = Release|Any CPU
 		{F74A1659-4994-47CB-A786-DF83675AD4DF}.Release|x86.ActiveCfg = Release|Any CPU
 		{F74A1659-4994-47CB-A786-DF83675AD4DF}.Release|x86.Build.0 = Release|Any CPU
-		{FB43BE68-D070-492C-BDED-018E03BF153D}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{FB43BE68-D070-492C-BDED-018E03BF153D}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{FB43BE68-D070-492C-BDED-018E03BF153D}.Debug|x64.ActiveCfg = Debug|Any CPU
-		{FB43BE68-D070-492C-BDED-018E03BF153D}.Debug|x64.Build.0 = Debug|Any CPU
-		{FB43BE68-D070-492C-BDED-018E03BF153D}.Debug|x86.ActiveCfg = Debug|Any CPU
-		{FB43BE68-D070-492C-BDED-018E03BF153D}.Debug|x86.Build.0 = Debug|Any CPU
-		{FB43BE68-D070-492C-BDED-018E03BF153D}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{FB43BE68-D070-492C-BDED-018E03BF153D}.Release|Any CPU.Build.0 = Release|Any CPU
-		{FB43BE68-D070-492C-BDED-018E03BF153D}.Release|x64.ActiveCfg = Release|Any CPU
-		{FB43BE68-D070-492C-BDED-018E03BF153D}.Release|x64.Build.0 = Release|Any CPU
-		{FB43BE68-D070-492C-BDED-018E03BF153D}.Release|x86.ActiveCfg = Release|Any CPU
-		{FB43BE68-D070-492C-BDED-018E03BF153D}.Release|x86.Build.0 = Release|Any CPU
+		{51E280D2-C9B9-4675-9E7C-BE04515BE3B6}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{51E280D2-C9B9-4675-9E7C-BE04515BE3B6}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{51E280D2-C9B9-4675-9E7C-BE04515BE3B6}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{51E280D2-C9B9-4675-9E7C-BE04515BE3B6}.Debug|x64.Build.0 = Debug|Any CPU
+		{51E280D2-C9B9-4675-9E7C-BE04515BE3B6}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{51E280D2-C9B9-4675-9E7C-BE04515BE3B6}.Debug|x86.Build.0 = Debug|Any CPU
+		{51E280D2-C9B9-4675-9E7C-BE04515BE3B6}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{51E280D2-C9B9-4675-9E7C-BE04515BE3B6}.Release|Any CPU.Build.0 = Release|Any CPU
+		{51E280D2-C9B9-4675-9E7C-BE04515BE3B6}.Release|x64.ActiveCfg = Release|Any CPU
+		{51E280D2-C9B9-4675-9E7C-BE04515BE3B6}.Release|x64.Build.0 = Release|Any CPU
+		{51E280D2-C9B9-4675-9E7C-BE04515BE3B6}.Release|x86.ActiveCfg = Release|Any CPU
+		{51E280D2-C9B9-4675-9E7C-BE04515BE3B6}.Release|x86.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -140,6 +140,6 @@ Global
 		{8DD4BC41-DC30-4267-ACBA-93FBD67044D9} = {F3681287-CEBF-4540-A820-B4B174AFF47F}
 		{0FEAB705-FEE4-4B66-A6E1-F3FF3BA6B04C} = {F3681287-CEBF-4540-A820-B4B174AFF47F}
 		{453F081C-D5FD-418E-95AF-231F1BAE1E8C} = {F3681287-CEBF-4540-A820-B4B174AFF47F}
-		{FB43BE68-D070-492C-BDED-018E03BF153D} = {1F2C7E28-510C-0414-601C-25083DE2C7DC}
+		{51E280D2-C9B9-4675-9E7C-BE04515BE3B6} = {1F2C7E28-510C-0414-601C-25083DE2C7DC}
 	EndGlobalSection
 EndGlobal
diff --git a/src/SecurityInsights/SecurityInsights/Az.SecurityInsights.psd1 b/src/SecurityInsights/SecurityInsights/Az.SecurityInsights.psd1
index f634a7235918..c68020680e97 100644
--- a/src/SecurityInsights/SecurityInsights/Az.SecurityInsights.psd1
+++ b/src/SecurityInsights/SecurityInsights/Az.SecurityInsights.psd1
@@ -3,7 +3,7 @@
 #
 # Generated by: Microsoft Corporation
 #
-# Generated on: 3/24/2026
+# Generated on: 4/7/2026
 #
 
 @{
diff --git a/src/SecurityInsights/SecurityInsights/ChangeLog.md b/src/SecurityInsights/SecurityInsights/ChangeLog.md
index 23ca8c586bf6..a9dee24e6aef 100644
--- a/src/SecurityInsights/SecurityInsights/ChangeLog.md
+++ b/src/SecurityInsights/SecurityInsights/ChangeLog.md
@@ -19,6 +19,7 @@
 -->
 
 ## Upcoming Release
+* Updated preannouncement breaking changes date to May 2026.
 
 ## Version 3.2.1
 * Preannounced breaking changes. Please refer to https://go.microsoft.com/fwlink/?linkid=2333229