- Fix problem in updating VolumeAttached in node status ([#112305](https://github.com/kubernetes/kubernetes/pull/112305), [@xing-yang](https://github.com/xing-yang)) [SIG Apps]

- Fix invalid VMSS updates due to incorrect cache ([#89002](https://github.com/kubernetes/kubernetes/pull/89002), [@ArchangelSDY](https://github.com/ArchangelSDY)) [SIG Cloud Provider]
- Fix the VMSS name and resource group name when updating Azure VMSS for LoadBalancer backendPools ([#89337](https://github.com/kubernetes/kubernetes/pull/89337), [@feiskyer](https://github.com/feiskyer)) [SIG Cloud Provider]

- The `matchLabelKeys/mismatchLabelKeys` feature is introduced to the hard/soft `PodAffinity/PodAntiAffinity`. ([#116065](https://github.com/kubernetes/kubernetes/pull/116065), [@sanposhiho](https://github.com/sanposhiho))
- When updating a CRD, per-expression cost limit check are now skipped for `x-kubernetes-validations` rules of versions that are not mutated. ([#121460](https://github.com/kubernetes/kubernetes/pull/121460), [@jiahuif](https://github.com/jiahuif))

[kubernetes-server-linux-s390x.tar.gz](https://dl.k8s.io/v1.6.0/kubernetes-server-linux-s390x.tar.gz) | `e15de8896bd84a9b74756adc1a2e20c6912a65f6ff0a3f3dfabc8b463e31d19b`

## WARNING: etcd backup strongly recommended

Before updating to 1.6, you are strongly recommended to back up your etcd data.
Please consult the installation procedure you are using (kargo, kops, kube-up,
kube-aws, kubeadm etc) for specific advice.

- Metrics for `RetroactiveDefaultStorageClass` feature are now available. To see an attempt count for updating PVC retroactively with a default StorageClass see `retroactive_storageclass_total` metric and for total numer of errors see `retroactive_storageclass_errors_total`. ([#113323](https://github.com/kubernetes/kubernetes/pull/113323), [@RomanBednar]...

* Allow kubernetes components to react to SIGTERM signal and shutdown gracefully. ([#57756](https://github.com/kubernetes/kubernetes/pull/57756), [@mborsz](https://github.com/mborsz))
* Fix scheduler cache panic when updating pod conditions. ([#56733](https://github.com/kubernetes/kubernetes/pull/56733), [@bsalamat](https://github.com/bsalamat))

* Fix AWS NLB security group updates where valid security group ports were incorrectly removed ([#68422](https://github.com/kubernetes/kubernetes/pull/68422), [@kellycampbell](https://github.com/kellycampbell))