* Fixed a panic in `kubectl run --attach ...` when the api server failed to create the runtime object (due to name conflict, PSP restriction, etc.) ([#61713](https://github.com/kubernetes/kubernetes/pull/61713), [@mountkin](https://github.com/mountkin))
* kube-scheduler has been fixed to use `--leader-elect` option back to true (as it was in previous versions) ([#59732](https://github.com/kubernetes/kubernetes/pull/59732), [@dims](https://github.com/dims))

- Improvements were made to `kubeadm reset` related to cleaning  etcd and notifying the user about the state of iptables.
- kubeadm commands now print warnings if input YAML documents contain unknown or duplicate fields.
- kubeadm now properly recognizes Docker 18.09.0 and newer, but still treats 18.06 as the default supported version.

tabular output for API resources via a new mime-type `application/json;as=Table;v=v1alpha1;g=meta.k8s.io`.  The returned object (if the server supports it) will be of type `meta.k8s.io/v1alpha1` with `Table`, and contain column and row information related to the resource.  Each row will contain information about the resource - by default it will be the object metadata, but callers can add the `?includeObject=Object` query parameter and receive the full object.  In the future kubectl will use this to...

mechanism to beta, adding alpha support for a new CSI driver registry as well as for topology, and adding a number of alpha features to support the use of CSI for “local ephemeral volumes” (that is, volumes that exist for the lifecycle of a pod and contain some injected information, like a token or secret).

With Kubernetes v1.12, SIG Storage also introduced alpha support for [volume snapshotting](https://github.com/kubernetes/enhancements/issues/177). This feature introduces the ability...

- Resolves regression generating informers for packages whose names contain `.` characters ([#82410](https://github.com/kubernetes/kubernetes/pull/82410), [@nikhita](https://github.com/nikhita))

- EndpointSlice should not contain endpoints for terminating pods ([#89056](https://github.com/kubernetes/kubernetes/pull/89056), [@andrewsykim](https://github.com/andrewsykim)) [SIG Apps and Network]

- When retrieving event resources, the `reportingController` and `reportingInstance` fields in the event will contain values. ([#116506](https://github.com/kubernetes/kubernetes/pull/116506), [@HirazawaUi](https://github.com/HirazawaUi)) [SIG API Machinery and Instrumentation]

* Fixed a panic in `kubectl run --attach ...` when the api server failed to create the runtime object (due to name conflict, PSP restriction, etc.) ([#61713](https://github.com/kubernetes/kubernetes/pull/61713), [@mountkin](https://github.com/mountkin))

## Introduction to 1.9.0

Kubernetes version 1.9 includes new features and enhancements, as well as fixes to identified issues. The release notes contain a brief overview of the important changes introduced in this release. The content is organized by Special Interest Group ([SIG](https://github.com/kubernetes/community/blob/master/sig-list.md)).

### Other (Cleanup or Flake)

- When retrieving event resources, the reportingController and reportingInstance fields in the event will contain values. ([#120067](https://github.com/kubernetes/kubernetes/pull/120067), [@HirazawaUi](https://github.com/HirazawaUi)) [SIG Instrumentation]

## Dependencies

### Added
_Nothing has changed._