- Label `apps.kubernetes.io/pod-index` added to Pod from StatefulSets is promoted to stable
  Label `batch.kubernetes.io/job-completion-index` added to Pods from Indexed Jobs is promoted to stable ([#128387](https://github.com/kubernetes/kubernetes/pull/128387), [@alaypatel07](https://github.com/alaypatel07)) [SIG Apps]

- Promoted `NodeInclusionPolicyInPodTopologySpread` to Stable in v1.33 ([#130920](https://github.com/kubernetes/kubernetes/pull/130920), [@kerthcet](https://github.com/kerthcet)) [SIG Apps, Node, Scheduling and Testing]

  For metrics `etcd_request_duration_seconds`, `etcd_requests_total` and `etcd_request_errors_total` replace `type` label with API `resource` and `group` label.
  For metric `apiserver_selfrequest_total` add a API `group` label.
  For metrics `apiserver_watch_events_sizes` and `apiserver_watch_events_total` replace API `kind` label with `resource` label.

### Volumes
* **[stable]** StorageClass API is promoted to v1 (storage.k8s.io/v1).
* **[stable]** Default storage classes are deployed during installation on Azure, AWS, GCE, OpenStack and vSphere.
* **[stable]** Added ability to populate environment variables from a configmap or secret.

### Other (Cleanup or Flake)

- Apiserver_request_duration_seconds is promoted to stable status. ([#99925](https://github.com/kubernetes/kubernetes/pull/99925), [@logicalhan](https://github.com/logicalhan)) [SIG API Machinery, Instrumentation and Testing]

* [stable] Support Attach and Detach operations for ReadWriteOnce (RWO) volumes that use iSCSI and Fibre Channel plugins.

* [stable] Expose storage usage metrics

  * The available capacity of a given Persistent Volume (PV) is available by calling the Kubernetes metrics API.

* [stable] Volume plugin metrics

- Removed the `CronJobTimeZone` feature gate (the feature is stable and always enabled)
  - Removed the `JobMutableNodeSchedulingDirectives` feature gate (the feature is stable and always enabled)

  - [Metrics Changes](#metrics-changes)
    - [Added metrics](#added-metrics)
    - [Deprecated/changed metrics](#deprecatedchanged-metrics)
  - [Notable Features](#notable-features)
    - [Stable](#stable)
    - [Beta](#beta)
    - [CLI Improvements](#cli-improvements)
  - [API Changes](#api-changes)
  - [Other notable changes](#other-notable-changes-1)
    - [API Machinery](#api-machinery)
    - [Apps](#apps)

    - [Promoted endPort in Network Policy to Stable](#promoted-endport-in-network-policy-to-stable)
    - [Promoted Local Ephemeral Storage Capacity Isolation to Stable](#promoted-local-ephemeral-storage-capacity-isolation-to-stable)
    - [Promoted core CSI Migration to Stable](#promoted-core-csi-migration-to-stable)
    - [Promoted CSI Ephemeral Volume to Stable](#promoted-csi-ephemeral-volume-to-stable)

    - [Metrics Changes](#metrics-changes)
      - [Added metrics](#added-metrics)
      - [Deprecated/changed metrics](#deprecated/changed-metrics)
    - [Notable Features](#notable-features)
      - [Stable](#stable)
      - [Beta](#beta)
      - [Alpha](#alpha)
- [v1.15.0-beta.1](#v1150-beta1)
  - [Downloads for v1.15.0-beta.1](#downloads-for-v1150-beta1)
    - [Client Binaries](#client-binaries-13)