- The `horizontalpodautoscaling` and `clusterrole-aggregation` controllers now assume the `autoscaling/v1` and `rbac.authorization.k8s.io/v1` APIs are available. If you disable those APIs and do not want to run those controllers, exclude them by passing `--controllers=-horizontalpodautoscaling` or `--controllers=-clusterrole-aggregation` to `kube-controller-manager`. ([#117977](https://github.com/kubernetes/kubernetes/pull/117977), [@liggitt](https://github.com/liggitt))...

* Break the 'certificatesigningrequests' controller into a 'csrapprover' controller and 'csrsigner' controller. ([#45514](https://github.com/kubernetes/kubernetes/pull/45514), [@mikedanese](https://github.com/mikedanese))

  * You can find the PodSpec tolerations that were created as annotations (if any) in a controller definition by doing `kubectl get <controller kind> <controller name> -o yaml` and looking for the "Annotation" section with the annotation key `scheduler.alpha.kubernetes.io/tolerations` (This will work whether you are running Kubernetes 1.5 or 1.6).

  optional int32 replicas = 1;

  // The number of pods that have labels matching the labels of the pod template of the replication controller.
  // +optional
  optional int32 fullyLabeledReplicas = 2;

  // The number of ready replicas for this replication controller.
  // +optional
  optional int32 readyReplicas = 4;

- The `PersistentVolumeLabel` admission controller in the API server is deprecated.

  - The replacement is running a cloud-specific controller-manager (often referred to as `cloud-controller-manager`) with the `PersistentVolumeLabel` controller enabled. This new controller loop operates as the `PersistentVolumeLabel` admission controller did in previous versions.

[registry.k8s.io/kube-controller-manager:v1.27.11](https://console.cloud.google.com/gcr/images/k8s-artifacts-prod/us/kube-controller-manager) | [amd64](https://console.cloud.google.com/gcr/images/k8s-artifacts-prod/us/kube-controller-manager-amd64), [arm64](https://console.cloud.google.com/gcr/images/k8s-artifacts-prod/us/kube-controller-manager-arm64), [ppc64le](https://console.cloud.google.com/gcr/images/k8s-artifacts-prod/us...

- 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))

[registry.k8s.io/kube-controller-manager:v1.23.17](https://console.cloud.google.com/gcr/images/k8s-artifacts-prod/us/kube-controller-manager) | [amd64](https://console.cloud.google.com/gcr/images/k8s-artifacts-prod/us/kube-controller-manager-amd64), [arm](https://console.cloud.google.com/gcr/images/k8s-artifacts-prod/us/kube-controller-manager-arm), [arm64](https://console.cloud.google.com/gcr/images/k8s-artifacts-prod/us/kube...

### **Apps**

*   The `kubernetes.io/created-by` annotation is no longer added to controller-created objects. Use the `metadata.ownerReferences` item with controller set to `true` to determine which controller, if any, owns an object. ([#54445](https://github.com/kubernetes/kubernetes/pull/54445),[ @crimsonfaith91](https://github.com/crimsonfaith91))

For detailed release notes on the three alpha features from SIG AWS, please refer to the following Changelogs:

- [aws-alb-ingress-controller v1.0.0](https://github.com/kubernetes-sigs/aws-alb-ingress-controller/releases/tag/v1.0.0)
- [aws-ebs-csi-driver v0.1](https://github.com/kubernetes-sigs/aws-ebs-csi-driver/releases/tag/v0.1.0)