- The following feature gates for volume expansion GA features have now been removed and must no longer be referenced in `--feature-gates` flags: `ExpandCSIVolumes`, `ExpandInUsePersistentVolumes`, `ExpandPersistentVolumes` ([#113942](https://github.com/kubernetes/kubernetes/pull/113942), [@mengjiao-liu](ht...

    - [Apps](#apps)
    - [Auth](#auth)
    - [Autoscaling](#autoscaling)
    - [Cluster Lifecycle](#cluster-lifecycle)
    - [OpenStack](#openstack)
    - [Scheduling](#scheduling)
  - [Notable Features](#notable-features)
    - [Workloads API (apps/v1beta2)](#workloads-api-appsv1beta2)
      - [API Object Additions and Migrations](#api-object-additions-and-migrations)
      - [Behavioral Changes](#behavioral-changes)

   ([#123001](https://github.com/kubernetes/kubernetes/pull/123001), [@tkashem](https://github.com/tkashem))
- Introduced a feature gate mechanism to `client-go`. Depending on the actual implementation, users can control features via environmental variables or command line options. ([#122555](https://github.com/kubernetes/kubernetes/pull/122555), [@p0lyn0mial](https://github.com/p0lyn0mial))

  will now create a Lease in the `kube-system` namespace. These lease objects can
  be used to identify the number of active API servers in the cluster, and may also
  be used for future features such as the Storage Version API.'
   ([#113629](https://github.com/kubernetes/kubernetes/pull/113629), [@andrewsykim](https://github.com/andrewsykim))
- 'The iptables kube-proxy backend now process service/endpoint changes

- The CRD validation rule with feature gate `CustomResourceValidationExpressions` was promoted to `GA`. ([#121373](https://github.com/kubernetes/kubernetes/pull/121373), [@cici37](https://github.com/cici37))
- The KMSv2 features with feature gates `KMSv2` and `KMSv2KDF` are promoted to `GA`.  The `KMSv1` feature gate is now disabled by default. ([#121485](https://github.com/kubernetes/kubernetes/pull/121485), [@ritazh](https://github.com/ritazh))