- Add `PersistentVolumeClaimDeletePoilcy` to StatefulSet API. ([#99378](https://github.com/kubernetes/kubernetes/pull/99378), [@mattcary](https://github.com/mattcary))

- Fixed StatefulSet to show the valid status even if the new replica creation fails. ([#112084](https://github.com/kubernetes/kubernetes/pull/112084), [@gjkim42](https://github.com/gjkim42)) [SIG Apps and Testing]

### Bug or Regression

- Added `podSpec` validation for creating `StatefulSet`. ([#131790](https://github.com/kubernetes/kubernetes/pull/131790), [@chengjoey](https://github.com/chengjoey)) [SIG Apps, Etcd and Testing]

- Fixes a panic in kube-controller-manager handling StatefulSet objects when revisionHistoryLimit is negative ([#129323](https://github.com/kubernetes/kubernetes/pull/129323), [@ardaguclu](https://github.com/ardaguclu)) [SIG Apps]

* kubectl: fixes a panic displaying pods with nominatedNodeName set ([#66406](https://github.com/kubernetes/kubernetes/pull/66406), [@liggitt](https://github.com/liggitt))
* fixes a validation error that could prevent updates to StatefulSet objects containing non-normalized resource requests ([#66165](https://github.com/kubernetes/kubernetes/pull/66165), [@liggitt](https://github.com/liggitt))

- StatefulSets should always count `.status.availableReplicas` at the correct time without a delay. This results in faster progress of StatefulSet rollout. ([#136097](https://github.com/kubernetes/kubernetes/pull/136097), [@atiratree](https://github.com/atiratree)) [SIG Apps]

### Other (Cleanup or Flake)

- TokenReview now supports audience validation of tokens with audiences other than the kube-apiserver.  ([#62692](https://github.com/kubernetes/kubernetes/pull/62692), [@mikedanese](https://github.com/mikedanese))
- StatefulSet is supported in `kubectl autoscale` command ([#71103](https://github.com/kubernetes/kubernetes/pull/71103), [@Pingan2017](https://github.com/Pingan2017))

- Fixed a 1.25.12 regression where kube-controller-manager can crash when StatefulSet with Parallel policy and PVC labels is scaled up. ([#121187](https://github.com/kubernetes/kubernetes/pull/121187), [@aleksandra-malinowska](https://github.com/aleksandra-malinowska)) [SIG Apps]

- Fixed a 1.26.7 regression where kube-controller-manager can crash when StatefulSet with Parallel policy and PVC labels is scaled up. ([#121186](https://github.com/kubernetes/kubernetes/pull/121186), [@aleksandra-malinowska](https://github.com/aleksandra-malinowska)) [SIG Apps]

- StatefulSet controllers no longer force a resync every 30 seconds when nothing has changed. ([#75622](https://github.com/kubernetes/kubernetes/pull/75622), [@jonsabo](https://github.com/jonsabo))