It is likely that `v1alpha2` will be removed in one of the future Kubernetes releases to be able to develop `v1`.

### Structured logging graduate to Beta

- `StartupProbe` was explicitly stopped when the `successThreshold` was reached.
  This eliminated the problem of executing `StartupProbe` more times than
  the `successThreshold`. ([#121206](https://github.com/kubernetes/kubernetes/pull/121206), [@mochizuki875](https://github.com/mochizuki875))

  Additionally, if you enable the `JobSuccessPolicy` feature gate, the Job gets "CompletionsReached" reason for the "SuccessCriteriaMet" and "Complete" condition type
  when the number of succeeded Job Pods (`.status.succeeded`) reached the desired completions (`.spec.completions`). ([#126067](https://github.com/kubernetes/kubernetes/pull/126067), [@tenzen-y](https://github.com/tenzen-y)) [SIG API Machinery, Apps and Testing]

- Fixed an issue where a `CronJob` could fail to clean up Jobs when the `ResourceQuota` for `Jobs` had been reached. ([#119776](https://github.com/kubernetes/kubernetes/pull/119776), [@ASverdlov](https://github.com/ASverdlov))

- [Namespaced Brokers](https://svc-cat.io/docs/namespaced-broker-resources/), which enable operators to install a broker into a namespace instead of the cluster level, reached GA.
- The [Service Plan Defaults](https://svc-cat.io/docs/service-plan-defaults/) feature is in alpha and is under active development. This feature gives operators the ability to define defaults for when someone provisions a service.

- Kube-log-runner: Added the `-log-file-size` parameter to rotate log output into a new file once it reached a certain size. Introduced `-log-file-age` to enable automatic removal of old output files, and `-flush-interval` to support periodic flushing. ([#127667](https://github.com/kubernetes/kubernetes/pull/127667), [@zylxjtu](https://github.com/zylxjtu))...

- The `ServiceAppProtocol` feature gate has been removed. It reached GA in Kubernetes ([#103190](https://github.com/kubernetes/kubernetes/pull/103190), [@robscott](https://github.com/robscott))

  - The disk-cached discovery client is moved from k8s.io/client-go/discovery to k8s.io/client-go/discovery/cached/disk.
The memory-cached discovery client is moved from k8s.io/client-go/discovery/cached to k8s.io/client-go/discovery/cached/memory.
([#72214](https://github.com/kubernetes/kubernetes/pull/72214), [@caesarxuchao](https://github.com/caesarxuchao))

  * Fix AWS EBS volumes not getting detached from node if routine to verify volumes are attached runs while the node is down ([#46463](https://github.com/kubernetes/kubernetes/pull/46463), [@wongma7](https://github.com/wongma7))

- Fix: the volume is not detached after the pod and PVC objects are deleted ([#117236](https://github.com/kubernetes/kubernetes/pull/117236), [@cvvz](https://github.com/cvvz)) [SIG Storage]