* unlock to run at that function's completion, following the normal
    * golang lock/deferred-unlock pattern.
* Avoid creating new controller revisions for statefulsets when cache is stale ([#67039](https://github.com/kubernetes/kubernetes/pull/67039), [@mortent](https://github.com/mortent))

* Stably sort controllerrevisions. This can prevent pods of statefulsets from continually rolling. ([#66882](https://github.com/kubernetes/kubernetes/pull/66882), [@ryanmcnamara](https://github.com/ryanmcnamara))

- Make STS available replicas optional again. ([#109241](https://github.com/kubernetes/kubernetes/pull/109241), [@ravisantoshgudimetla](https://github.com/ravisantoshgudimetla))

- Mount-utils: treat syscall.ENODEV as corrupted mount ([#126174](https://github.com/kubernetes/kubernetes/pull/126174), [@dobsonj](https://github.com/dobsonj)) [SIG Storage]

- `StatefulSetAutoDeletePVC` feature gate promoted to beta. ([#116501](https://github.com/kubernetes/kubernetes/pull/116501), [@mattcary](https://github.com/mattcary))
- `StatefulSet` names must be DNS labels, rather than subdomains. Any `StatefulSet`
  which took advantage of subdomain validation (by having dots in the name) can't
  possibly have worked, because we eventually set `pod.spec.hostname` from the `StatefulSetName`,

- Fix regression in statefulset conversion which prevented applying a statefulset multiple times. ([#87721](https://github.com/kubernetes/kubernetes/pull/87721), [@liggitt](https://github.com/liggitt)) [SIG Apps and Testing]

- StatefulSet pods now have the pod index set as a pod label `statefulset.kubernetes.io/pod-index`. ([#119232](https://github.com/kubernetes/kubernetes/pull/119232), [@danielvegamyhre](https://github.com/danielvegamyhre)) [SIG Apps]

- 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]

- StatefulSet autodelete respected controlling owners on PVC claims as described in https://github.com/kubernetes/enhancements/pull/4375. ([#122499](https://github.com/kubernetes/kubernetes/pull/122499), [@mattcary](https://github.com/mattcary)) [SIG Apps and...

* 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))