- Add metric etcd_lease_object_counts for kube-apiserver to observe max objects attached to a single etcd lease. ([#97480](https://github.com/kubernetes/kubernetes/pull/97480), [@lingsamuel](https://github.com/lingsamuel)) [SIG API Machinery, Instrumentation and Scalability]

## Deprecations

This section provides an overview of deprecated API versions, options, flags, and arguments. Deprecated means that we intend to remove the capability from a future release. After removal, the capability will no longer work. The sections are organized by SIGs.

### **API Machinery**

have been given priority for 1.15.

kubeadm, the cluster lifecycle building block, continues to receive features and stability work required for bootstrapping production clusters efficiently. kubeadm has promoted high availability (HA) capability to beta, allowing users to use the familiar `kubeadm init` and `kubeadm join` commands to [configure and deploy an HA control plane](https://kubernetes.io/docs/setup/production-environment/tools/kubeadm/high-availability/). An entire new test suite...

* In-tree support for openstack credentials is now deprecated. please use the "client-keystone-auth" from the cloud-provider-openstack repository. details on how to use this new capability is documented [here](https://github.com/kubernetes/cloud-provider-openstack/blob/master/docs/using-client-keystone-auth.md) ([#64346](https://github.com/kubernetes/kubernetes/pull/64346), [@dims](https://github.com/dims))

- Ensure that volume capability and staging target fields are present in nodeExpansion CSI calls

    - [CLI](#cli-1)
    - [Cluster Lifecycle](#cluster-lifecycle)
    - [GCP](#gcp)
    - [Instrumentation](#instrumentation)
    - [Node](#node-1)
    - [OpenStack](#openstack-1)
    - [Scalability](#scalability)
    - [Storage](#storage-1)
    - [Windows](#windows-1)
    - [Autoscaling](#autoscaling)
    - [API-Machinery](#api-machinery-1)
    - [Network](#network-1)
    - [Azure](#azure-1)

* **[stable]** Volume plugin for ScaleIO enabling pods to seamlessly access and use data stored on Dell EMC ScaleIO volumes.
* **[stable]** Volume plugin for Portworx added capability to use [Portworx](http://www.portworx.com) as a storage provider for Kubernetes clusters. Portworx pools server capacity and turns servers or cloud instances into converged, highly available compute and storage nodes.

> In a cloud-native environment, scalability is not a function of the application but the orchestration platform.

 *       anything about how the property is tested. To find out, read the code.
 *   <li>These tests are "conformance tests", and do not attempt to test throughput, latency,
 *       scalability or other performance factors (see the separate "jtreg" tests for a set intended
 *       to check these for the most central aspects of functionality.) So, most tests use the

 *       anything about how the property is tested. To find out, read the code.
 *   <li>These tests are "conformance tests", and do not attempt to test throughput, latency,
 *       scalability or other performance factors (see the separate "jtreg" tests for a set intended
 *       to check these for the most central aspects of functionality.) So, most tests use the