* kubeadm now uses an upgraded API version for the configuration file, `kubeadm.k8s.io/v1alpha2`. kubeadm in v1.11 will still be able to read `v1alpha1` configuration, and will automatically convert the configuration to `v1alpha2`, both internally and when storing the configuration in the ConfigMap in the cluster. ([#63788](https://github.com/kubernetes/kubernetes/pull/63788), [@luxas](https://github.com/luxas))

  - support for the `v1alpha3` configuration file format is deprecated and will be removed in 1.14. Use `kubeadm config migrate` to migrate `v1alpha3` configuration files to `v1beta1`, which provides improvements in image repository management, addons configuration, and other areas. The documentation for `v1beta1` can be found here: https://godoc.org/k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm/v1beta1...

  * [Nodes](https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#node-affinity-beta-feature) and [pods](https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#inter-pod-affinity-and-anti-affinity-beta-feature) now support affinity and anti-affinity
  * Advanced scheduling can be performed with [taints and tolerations](https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#taints-and-tolerations-beta-feature)

* Kubeadm: CoreDNS supports migration of the kube-dns configuration to CoreDNS configuration when upgrading the service discovery from kube-dns to CoreDNS as part of Beta.  ([#58828](https://github.com/kubernetes/kubernetes/pull/58828), [@rajansandeep](https://github.com/rajansandeep))

* Fix Heapster configuration and Metrics Server configuration to enable overriding default resource requirements. ([#56965](https://github.com/kubernetes/kubernetes/pull/56965), [@kawych](https://github.com/kawych))



# v1.9.0

- Kube-scheduler: a plugin enabled in a v1beta2 configuration file takes precedence over the default configuration for that plugin. This simplifies enabling default plugins with custom configuration without needing to explicitly disable those default plugins. ([#99582](https://github.com/kubernetes/kubernetes/pull/99582), [@chendave](https://github.com/chendave))

pod priority and creation of PriorityClasses ([user doc](https://kubernetes.io/docs/concepts/configuration/pod-priority-preemption/))([design doc](https://github.com/kubernetes/community/blob/master/contributors/design-proposals/scheduling/pod-priority-api.md))

* [alpha] This version now supports priority-based preemption of pods ([user doc](https://kubernetes.io/docs/concepts/configuration/pod-priority-preemption/))([design doc](https://github.com/kubernetes/community/blob/master/c...

### SIG Node

- Added configuration for AWS endpoint fine control: ([#72245](https://github.com/kubernetes/kubernetes/pull/72245), [@ampsingram](https://github.com/ampsingram))

## Other notable changes

### API Machinery

- Added port configuration to Admission webhook configuration service reference.
- Added port configuration to AuditSink webhook configuration service reference.
- Added port configuration to CRD Conversion webhook configuration service reference.