diff --git a/src/Resources/Resources/ChangeLog.md b/src/Resources/Resources/ChangeLog.md
index b11f31a8279e..9ca3a6216ecc 100644
--- a/src/Resources/Resources/ChangeLog.md
+++ b/src/Resources/Resources/ChangeLog.md
@@ -19,6 +19,12 @@
 -->
 
 ## Upcoming Release
+* Added breaking change preannouncement for `PSRoleDefinition` type changes in Az.Resources 10.0.0 [#29058]
+    - The flattened properties `Actions`, `NotActions`, `DataActions`, `NotDataActions`, `Condition`, and `ConditionVersion` will be removed from `PSRoleDefinition`
+    - Use `Permissions[n].Actions`, `Permissions[n].DataActions`, etc. instead to access the full permission structure with per-permission conditions
+    - Affects output for `Get-AzRoleDefinition`, `New-AzRoleDefinition`, `Set-AzRoleDefinition`, and `Remove-AzRoleDefinition` (with `-PassThru`)
+    - Affects input format for `New-AzRoleDefinition` and `Set-AzRoleDefinition` cmdlets
+    - Affects `-InputObject` parameter for `Remove-AzRoleDefinition` cmdlet
 
 ## Version 9.0.0
 * Removed unavailable variant Get-AzRoleEligibleChildResource cmdlet for InputObject parameter.
diff --git a/src/Resources/Resources/RoleDefinitions/GetAzureRoleDefinitionCommand.cs b/src/Resources/Resources/RoleDefinitions/GetAzureRoleDefinitionCommand.cs
index 2fa51b541f98..47f8e6ee3a96 100644
--- a/src/Resources/Resources/RoleDefinitions/GetAzureRoleDefinitionCommand.cs
+++ b/src/Resources/Resources/RoleDefinitions/GetAzureRoleDefinitionCommand.cs
@@ -16,6 +16,7 @@
 using Microsoft.Azure.Commands.Resources.Models;
 using Microsoft.Azure.Commands.Resources.Models.Authorization;
 using Microsoft.WindowsAzure.Commands.Common;
+using Microsoft.WindowsAzure.Commands.Common.CustomAttributes;
 
 using System;
 using System.Collections.Generic;
@@ -28,6 +29,7 @@ namespace Microsoft.Azure.Commands.Resources
     /// <summary>
     /// Get the available role Definitions for certain resource types.
     /// </summary>
+    [GenericBreakingChangeWithVersion("The output type PSRoleDefinition is changing. The flattened properties 'Actions', 'NotActions', 'DataActions', 'NotDataActions', 'Condition', and 'ConditionVersion' are being removed. Use 'Permissions[n].Actions', 'Permissions[n].DataActions', etc. instead to access the full permission structure with per-permission conditions.", "16.0.0", "10.0.0")]
     [Cmdlet("Get", ResourceManager.Common.AzureRMConstants.AzureRMPrefix + "RoleDefinition", DefaultParameterSetName = ParameterSet.RoleDefinitionName), OutputType(typeof(PSRoleDefinition))]
     public class GetAzureRoleDefinitionCommand : ResourcesBaseCmdlet
     {
diff --git a/src/Resources/Resources/RoleDefinitions/NewAzureRoleDefinitionCommand.cs b/src/Resources/Resources/RoleDefinitions/NewAzureRoleDefinitionCommand.cs
index 250da3e03e55..093cb26989ae 100644
--- a/src/Resources/Resources/RoleDefinitions/NewAzureRoleDefinitionCommand.cs
+++ b/src/Resources/Resources/RoleDefinitions/NewAzureRoleDefinitionCommand.cs
@@ -16,6 +16,7 @@
 using Microsoft.Azure.Commands.Resources.Models;
 using Microsoft.Azure.Commands.Resources.Models.Authorization;
 using Microsoft.WindowsAzure.Commands.Utilities.Common;
+using Microsoft.WindowsAzure.Commands.Common.CustomAttributes;
 
 using Newtonsoft.Json;
 
@@ -28,6 +29,7 @@ namespace Microsoft.Azure.Commands.Resources
     /// <summary>
     /// Creates a new role definition.
     /// </summary>
+    [GenericBreakingChangeWithVersion("The -InputFile JSON format and -Role parameter are changing. The flattened properties 'Actions', 'NotActions', 'DataActions', 'NotDataActions' at the root level are being replaced by a 'Permissions' array. Each permission object contains 'Actions', 'NotActions', 'DataActions', 'NotDataActions', 'Condition', and 'ConditionVersion' properties. The output type PSRoleDefinition is also changing accordingly.", "16.0.0", "10.0.0")]
     [Cmdlet("New", ResourceManager.Common.AzureRMConstants.AzureRMPrefix + "RoleDefinition"), OutputType(typeof(PSRoleDefinition))]
     public class NewAzureRoleDefinitionCommand : ResourcesBaseCmdlet
     {
diff --git a/src/Resources/Resources/RoleDefinitions/RemoveAzureRoleDefinitionCommand.cs b/src/Resources/Resources/RoleDefinitions/RemoveAzureRoleDefinitionCommand.cs
index f05617e8199b..b4910e36a399 100644
--- a/src/Resources/Resources/RoleDefinitions/RemoveAzureRoleDefinitionCommand.cs
+++ b/src/Resources/Resources/RoleDefinitions/RemoveAzureRoleDefinitionCommand.cs
@@ -16,6 +16,7 @@
 using Microsoft.Azure.Commands.Resources.Models;
 using Microsoft.Azure.Commands.Resources.Models.Authorization;
 using Microsoft.WindowsAzure.Commands.Common;
+using Microsoft.WindowsAzure.Commands.Common.CustomAttributes;
 using Microsoft.WindowsAzure.Commands.Utilities.Common;
 
 using System;
@@ -28,6 +29,7 @@ namespace Microsoft.Azure.Commands.Resources
     /// <summary>
     /// Deletes a given role definition.
     /// </summary>
+    [GenericBreakingChangeWithVersion("The -InputObject parameter type PSRoleDefinition is changing. The flattened properties 'Actions', 'NotActions', 'DataActions', 'NotDataActions', 'Condition', 'ConditionVersion' are being replaced by a 'Permissions' array containing permission objects with these properties. The output when using -PassThru is also changing accordingly.", "16.0.0", "10.0.0")]
     [Cmdlet("Remove", ResourceManager.Common.AzureRMConstants.AzureRMPrefix + "RoleDefinition", SupportsShouldProcess = true,DefaultParameterSetName = ParameterSet.RoleDefinitionId), OutputType(typeof(bool))]
     public class RemoveAzureRoleDefinitionCommand : ResourcesBaseCmdlet
     {
diff --git a/src/Resources/Resources/RoleDefinitions/SetAzureRoleDefinitionCommand.cs b/src/Resources/Resources/RoleDefinitions/SetAzureRoleDefinitionCommand.cs
index c4d6354bd047..515b41ac2686 100644
--- a/src/Resources/Resources/RoleDefinitions/SetAzureRoleDefinitionCommand.cs
+++ b/src/Resources/Resources/RoleDefinitions/SetAzureRoleDefinitionCommand.cs
@@ -16,6 +16,7 @@
 using Microsoft.Azure.Commands.Resources.Models;
 using Microsoft.Azure.Commands.Resources.Models.Authorization;
 using Microsoft.WindowsAzure.Commands.Utilities.Common;
+using Microsoft.WindowsAzure.Commands.Common.CustomAttributes;
 
 using Newtonsoft.Json;
 
@@ -27,6 +28,7 @@ namespace Microsoft.Azure.Commands.Resources
     /// <summary>
     /// Updates an existing role definition.
     /// </summary>
+    [GenericBreakingChangeWithVersion("The -InputFile JSON format and -Role parameter are changing. The flattened properties 'Actions', 'NotActions', 'DataActions', 'NotDataActions' at the root level are being replaced by a 'Permissions' array. Each permission object contains 'Actions', 'NotActions', 'DataActions', 'NotDataActions', 'Condition', and 'ConditionVersion' properties. The output type PSRoleDefinition is also changing accordingly.", "16.0.0", "10.0.0")]
     [Cmdlet("Set", ResourceManager.Common.AzureRMConstants.AzureRMPrefix + "RoleDefinition"), OutputType(typeof(PSRoleDefinition))]
     public class SetAzureRoleDefinitionCommand : ResourcesBaseCmdlet
     {