* The `spec.SecurityContext.Sysctls` field is now dropped during creation of `Pod` objects unless the `Sysctls` feature gate is enabled. ([#72752](https://github.com/kubernetes/kubernetes/pull/72752), [@rajathagasthya](https://github.com/rajathagasthya))
    * The `spec.AllowedUnsafeSysctls` and `spec.ForbiddenSysctls` fields are now dropped during creation of `PodSecurityPolicy` objects unless the `Sysctls` feature gate is enabled.

- Kubelet podresources API now provides the information about active pods only. ([#79409](https://github.com/kubernetes/kubernetes/pull/79409), [@takmatsu](https://github.com/takmatsu)) [SIG Node]
- Pod Finalizers and Conditions updates are skipped for re-scheduling attempts ([#91950](https://github.com/kubernetes/kubernetes/pull/91950), [@alculquicondor](https://github.com/alculquicondor)) [SIG Scheduling]

- Fixes a bug where a partial EndpointSlice update could cause node name information to be dropped from endpoints that were not updated. ([#108203](https://github.com/kubernetes/kubernetes/pull/108203), [@robscott](https://github.com/robscott)) [SIG Network]

### API Change

- Kubelet podresources API now provides the information about active pods only. ([#79409](https://github.com/kubernetes/kubernetes/pull/79409), [@takmatsu](https://github.com/takmatsu)) [SIG Node]
- Pod Finalizers and Conditions updates are skipped for re-scheduling attempts ([#91953](https://github.com/kubernetes/kubernetes/pull/91953), [@alculquicondor](https://github.com/alculquicondor)) [SIG Scheduling]

- Fixes a bug where a partial EndpointSlice update could cause node name information to be dropped from endpoints that were not updated. ([#108201](https://github.com/kubernetes/kubernetes/pull/108201), [@robscott](https://github.com/robscott)) [SIG Network]

    - [RuntimeClass feature graduates to General Availability.](#runtimeclass-feature-graduates-to-general-availability)
    - [Cloud Controller Manager now exclusively shipped by Cloud Provider](#cloud-controller-manager-now-exclusively-shipped-by-cloud-provider)
  - [Known Issues](#known-issues)
    - [Summary API in kubelet doesn't have accelerator metrics](#summary-api-in-kubelet-doesnt-have-accelerator-metrics)

- `apiserver_dropped_requests` is dropped from this release since `apiserver_request_total` can now be used to track dropped requests. `etcd_object_counts` is also removed in favor of `apiserver_storage_objects`. `apiserver_registered_watchers` is also removed in favor of `apiserver_longrunning_requests`. ([#110337](https://git...

* Fixed an issue with informers missing an `Added` event if a recently deleted object was immediately recreated at the same time the informer dropped a watch and relisted. ([#83911](https://github.com/kubernetes/kubernetes/pull/83911), [@matte21](https://github.com/matte21))

  * Rescheduler relies on taints, which were changed in a backward incompatible way. Rescheduler 0.3 shipped together with Kubernetes 1.6 understands the new taints and will clean up the old annotations, but Rescheduler 0.2 shipped together with Kubernetes 1.5 doesn't understand the new taints. In order to avoid eviction loop during 1.5->1.6 upgrade you need to either upgrade the master node atomically (for example...