- [Immutable Secrets and ConfigMaps](#immutable-secrets-and-configmaps)
    - [Structured Logging in Kubelet](#structured-logging-in-kubelet)
    - [Storage Capacity Tracking](#storage-capacity-tracking)
    - [Generic Ephemeral Volumes](#generic-ephemeral-volumes)
    - [CSI Service Account Token](#csi-service-account-token)
    - [CSI Health Monitoring](#csi-health-monitoring)

  Jobs that are tracked using this mechanism get the annotation `batch.kubernetes.io/job-tracking`. This is a temporary measure. Two releases after this feature graduates to beta, the annotation won't be added to Jobs anymore. ([#98817](https://github.com/kubernetes/kubernetes/pull/98817), ...

- Kube-apiserver: Fixes spurious warning log messages about enabled alpha APIs while starting API server ([#135343](https://github.com/kubernetes/kubernetes/pull/135343), [@michaelasp](https://github.com/michaelasp)) [SIG API Machinery]

- Starting in 1.31, `container_engine_t` was added to the list of allowed SELinux types in the baseline Pod Security Standard. ([#126165](https://github.com/kubernetes/kubernetes/pull/126165), [@haircommander](https://github.com/haircommander))

- DRA: Starting Kubernetes 1.33, only users with access to an admin namespace with the `kubernetes.io/dra-admin-access` label are authorized to create ResourceClaim or ResourceClaimTemplate objects with the `adminAccess` field in this admin namespace if they want...

* Use separate client for leader election in scheduler to avoid starving leader election by regular scheduler operations. ([#53793](https://github.com/kubernetes/kubernetes/pull/53793), [@wojtek-t](https://github.com/wojtek-t))

- Added `apiextensions_apiserver_update_ratcheting_time` metric for tracking time taken during requests by feature `CRDValidationRatcheting`. ([#121462](https://github.com/kubernetes/kubernetes/pull/121462), [@alexzielenski](https://github.com/alexzielenski))

* API: the metadata.selfLink field is deprecated in individual and list objects. It will no longer be returned starting in v1.20, and the field will be removed entirely in v1.21. ([#80978](https://github.com/kubernetes/kubernetes/pull/80978), [@wojtek-t](https://github.com/wojtek-t))

### Internal Storage Layer
* upgrade to etcd3 prior to upgrading to 1.6 **OR** explicitly specify `--storage-backend=etcd2 --storage-media-type=application/json` when starting the apiserver

### Node Components
* **Kubelet with the Docker-CRI implementation**
  * The Docker-CRI implementation is enabled by default.
  * It is not compatible with containers created by older Kubelets. It is

- Removed tracking annotation from validation and defaulting. ([#117633](https://github.com/kubernetes/kubernetes/pull/117633), [@kannon92](https://github.com/kannon92))