diff --git a/src/Compute/Compute/ChangeLog.md b/src/Compute/Compute/ChangeLog.md
index 4f72866e676f..320ee4b48320 100644
--- a/src/Compute/Compute/ChangeLog.md
+++ b/src/Compute/Compute/ChangeLog.md
@@ -20,6 +20,7 @@
 
 -->
 ## Upcoming Release
+* Added breaking change message for `New-AzVM` and `New-AzVmss` cmdlets.
 
 ## Version 10.0.0
 * Added new properties `Architecture`, `HyperVGeneration`, and `ImageDeprecationStatus` to be returned in `Get-AzVMImage` ListVMImage parameter set.
diff --git a/src/Compute/Compute/Generated/VirtualMachineScaleSet/VirtualMachineScaleSetCreateOrUpdateMethod.cs b/src/Compute/Compute/Generated/VirtualMachineScaleSet/VirtualMachineScaleSetCreateOrUpdateMethod.cs
index 8ec6334a5b03..e7fb3944b98b 100644
--- a/src/Compute/Compute/Generated/VirtualMachineScaleSet/VirtualMachineScaleSetCreateOrUpdateMethod.cs
+++ b/src/Compute/Compute/Generated/VirtualMachineScaleSet/VirtualMachineScaleSetCreateOrUpdateMethod.cs
@@ -40,6 +40,7 @@
 
 namespace Microsoft.Azure.Commands.Compute.Automation
 {
+    [GenericBreakingChangeWithVersion("In the next breaking change period (Nov 2025), the default VM size will change from 'Standard_Ds1_v2' to 'Standard_D2s_v5'.", "15.0.0", "11.0.0")]
     [Cmdlet(VerbsCommon.New, ResourceManager.Common.AzureRMConstants.AzureRMPrefix + "Vmss", DefaultParameterSetName = "DefaultParameter", SupportsShouldProcess = true)]
     [OutputType(typeof(PSVirtualMachineScaleSet))]
     public partial class NewAzureRmVmss : ComputeAutomationBaseCmdlet
diff --git a/src/Compute/Compute/VirtualMachine/Operation/NewAzureVMCommand.cs b/src/Compute/Compute/VirtualMachine/Operation/NewAzureVMCommand.cs
index 605751e477b8..47106be01c62 100644
--- a/src/Compute/Compute/VirtualMachine/Operation/NewAzureVMCommand.cs
+++ b/src/Compute/Compute/VirtualMachine/Operation/NewAzureVMCommand.cs
@@ -59,6 +59,7 @@
 
 namespace Microsoft.Azure.Commands.Compute
 {
+    [GenericBreakingChangeWithVersion("In the next breaking change period (Nov 2025), the default VM size will change from 'Standard_D2s_v3' to 'Standard_D2s_v5'.", "15.0.0", "11.0.0")]
     [Cmdlet("New", ResourceManager.Common.AzureRMConstants.AzureRMPrefix + "VM", SupportsShouldProcess = true, DefaultParameterSetName = "SimpleParameterSet")]
     [OutputType(typeof(PSAzureOperationResponse), typeof(PSVirtualMachine))]
     public class NewAzureVMCommand : VirtualMachineBaseCmdlet