- Coordination.v1alpha1 API is dropped and replaced with coordination.v1alpha2. Old coordination.v1alpha1 types must be deleted before upgrade ([#127857](https://github.com/kubernetes/kubernetes/pull/127857), [@Jefftree](https://github.com/Jefftree)) [SIG API Machinery, Etcd, Scheduling and Testing]

   ([#123372](https://github.com/kubernetes/kubernetes/pull/123372), [@carlory](https://github.com/carlory))

- Kubeadm: removed the deprecated `output.kubeadm.k8s.io/v1alpha2` API for structured output. Please use v1alpha3 instead. ([#124496](https://github.com/kubernetes/kubernetes/pull/124496), [@carlory](https://github.com/carlory))

    - [Added](#added-4)
    - [Changed](#changed-4)
    - [Removed](#removed-4)
- [v1.34.0-alpha.3](#v1340-alpha3)
  - [Downloads for v1.34.0-alpha.3](#downloads-for-v1340-alpha3)
    - [Source Code](#source-code-5)
    - [Client Binaries](#client-binaries-5)
    - [Server Binaries](#server-binaries-5)
    - [Node Binaries](#node-binaries-5)
    - [Container Images](#container-images-5)

- Kubelet: plugins for dynamic resource allocation may use the `v1alpha3` API instead of v1alpha2 if they want to do prepare/unprepare operations in batches. ([#119012](https://github.com/kubernetes/kubernetes/pull/119012), [@pohly](https://github.com/pohly))

    * rbac.authorization.k8s.io/v1alpha1
    * settings.k8s.io/v1alpha1
    * If you wish to continue using them in v1.8, please enable them explicitly using the `--runtime-config` flag of the apiserver (for example, `--runtime-config="rbac.authorization.k8s.io/v1alpha1,settings.k8s.io/v1alpha1"`)

  to kubelet config ([#112136](https://github.com/kubernetes/kubernetes/pull/112136), [@pacoxu](https://github.com/pacoxu))
- `resource.k8s.io/v1alpha1` was replaced with `resource.k8s.io/v1alpha2`. Before
  upgrading a cluster, all objects in resource.k8s.io/v1alpha1 (ResourceClaim, ResourceClaimTemplate,
  ResourceClass, PodScheduling) must be deleted. The changes are internal, so

If a container runtime does not support the `v1` API, Kubernetes will fall back to the `v1alpha2` implementation.
There is no intermediate action required by end-users, because `v1` and `v1alpha2` do not differ in their implementation.
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

- The `client.authentication.k8s.io/v1alpha1` ExecCredential has been removed. If you are using a client-go credential plugin that relies on the v1alpha1 API please contact the distributor of your plugin for instructions on how to migrate to the v1 API. ([#108616](https://github.com/kubernetes/kubernetes/pull/108616), [@margocrawf](https://github.com/margocrawf))

- Added support for CEL expressions to `v1alpha1 AuthorizationConfiguration` webhook `matchConditions`. ([#121223](https://github.com/kubernetes/kubernetes/pull/121223), [@ritazh](https://github.com/ritazh))