Address the backport detail.

Author: cici37

keps/prod-readiness/sig-api-machinery/5080.yaml

@@ -1,3 +1,3 @@
 kep-number: 5080
-alpha:
+beta:
   approver: "@jpbetz"

keps/sig-api-machinery/5080-ordered-namespace-deletion/README.md

@@ -7,6 +7,7 @@
   - [Goals](#goals)
   - [Non-Goals](#non-goals)
 - [Proposal](#proposal)
+  - [Feature Gate handling](#feature-gate-handling)
   - [User Stories (Optional)](#user-stories-optional)
     - [Story 1 - Pod VS NetworkPolicy](#story-1---pod-vs-networkpolicy)
     - [Story 2 - having finalizer conflicts with deletion order](#story-2---having-finalizer-conflicts-with-deletion-order)
@@ -140,6 +141,12 @@ the resources associated with this namespace should be deleted in order:
 - Wait for all the pods to be stopped or deleted.
 - Delete all the other resources in the namespace (in an undefined order).
 
+### Feature Gate handling
+
+Due to this KEP is addressing the security concern and we do wanna give options to close security gaps in the past,
+the feature gate will be introduced as beta and on by default in 1.33 release. We will backport the feature gate with off-by-default
+configuration to all supported releases. See [the detailed discussion on slack](https://kubernetes.slack.com/archives/CJH2GBF7Y/p1741258168683299)
+
 ### User Stories (Optional)
 
 #### Story 1 - Pod VS NetworkPolicy

keps/sig-api-machinery/5080-ordered-namespace-deletion/kep.yaml

@@ -20,7 +20,7 @@ see-also: []
 replaces: []
 
 # The target maturity stage in the current dev cycle for this KEP.
-stage: alpha
+stage: beta
 
 # The most recent milestone for which work toward delivery of this KEP has been
 # done. This can be the current (upcoming) milestone, if it is being actively
@@ -29,8 +29,7 @@ latest-milestone: "v1.33"
 
 # The milestone at which this feature was, or is targeted to be, at each stage.
 milestone:
-  alpha: "v1.33"
-  beta: ""
+  beta: "1.30"
   stable: ""
 
 # The following PRR answers are required at alpha release