- Reduced log verbosity for high-frequency, low-value log entries in Job, IPAM, and ReplicaSet controllers by adjusting them to V(2), V(4) and V(4) respectively. This change minimizes log noise while maintaining access to these logs when needed. ([#130591](https://github.com/kubernetes/kubernetes/pull/130591), [@fmuyassarov](https://gith...

- Fixed a bug that caused duplicate validation when updating a ReplicaSet. ([#131873](https://github.com/kubernetes/kubernetes/pull/131873), [@gavinkflam](https://github.com/gavinkflam)) [SIG Apps]

* fix typo  ([#59619](https://github.com/kubernetes/kubernetes/pull/59619), [@jianliao82](https://github.com/jianliao82))

* DaemonSet, Deployment, ReplicaSet, and StatefulSet objects are now persisted in etcd in apps/v1 format ([#58854](https://github.com/kubernetes/kubernetes/pull/58854), [@liggitt](https://github.com/liggitt))

- Track ownership of scale subresource for all scalable resources i.e. Deployment, ReplicaSet, StatefulSet, ReplicationController, and Custom Resources. ([#98377](https://github.com/kubernetes/kubernetes/pull/98377), [@nodo](https://github.com/nodo)) [SIG API Machinery and Testing]

### Feature

  - DaemonSet, Deployment, and ReplicaSet resources will no longer be served from `extensions/v1beta1`, `apps/v1beta1`, or `apps/v1beta2` in v1.16. Migrate to the `apps/v1` API, available since v1.9. Existing persisted data can be retrieved via the `apps/v1` API.

- Kubeadm: fixed the bug that `kubeadm certs generate-csr` command does not remove duplicated SANs ([#107982](https://github.com/kubernetes/kubernetes/pull/107982), [@SataQiu](https://github.com/SataQiu))

  - DaemonSet, Deployment, and ReplicaSet resources will no longer be served from `extensions/v1beta1`, `apps/v1beta1`, or `apps/v1beta2` in v1.16. Migrate to the `apps/v1` API, available since v1.9. Existing persisted data can be retrieved via the `apps/v1` API.

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- Fixed a regression in default configurations, which enabled PodDisruptionConditions by default, 
  that prevented the control plane's pod garbage collector from deleting pods that contained duplicated field keys (env. variables with repeated keys or container ports). ([#121379](https://github.com/kubernetes/kubernetes/pull/121379), [@mimowo](https://github.com/mimowo)) [SIG Apps, Auth, Node, Scheduling and Testing]

- Fixed a regression in default 1.26 configurations, which enabled PodDisruptionConditions by default, 
  that prevented the control plane's pod garbage collector from deleting pods that contained duplicated field keys (env. variables with repeated keys or container ports). ([#121381](https://github.com/kubernetes/kubernetes/pull/121381), [@mimowo](https://github.com/mimowo)) [SIG Apps, Auth, Scheduling and Testing]