ConfigMap rendering [issue](https://github.com/kubernetes/kubernetes/issues/112081) was found in the 1.25.0 release. When ConfigMaps get updated within the API, they do not get rendered to the resulting pod's filesystem by the Kubelet. The feature has been [reverted to alpha](https://github.com/kubernetes/kubernetes/pull/112078) in the 1.25.1 release.

## Urgent Upgrade Notes

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improvements in the 1.13 release.  A new alpha feature is introduced to improve the mechanism that nodes heartbeat back to the control plane.  The `NodeLease` feature results in the node using a `Lease` resource in the `kube-node-lease` namespace that is renewed periodically.  The `NodeStatus` that was used previously to heartbeat back to the control plane is only updated when it changes.  This reduces load on the control plane for large clusters. The Kubelet plugin registration mechanism, which enables automatic...

* Bugfix: OpenAPI models may not get group-version-kind extension if kubernetes is vendored in another project (e.g. minikube). Kubectl 1.8 needs this extension to work with those projects. ([#53152](https://github.com/kubernetes/kubernetes/pull/53152), [@mbohlool](https://github.com/mbohlool))

- kube-scheduler won't be able to report scheduling Events if `events.k8s.io/v1beta1` API is disabled. We are targeting the fix for v1.16.2 ([#83203](https://github.com/kubernetes/kubernetes/issues/83203))

*   `conversion-gen` is now usable in a context without a vendored k8s.io/kubernetes. The Kubernetes core API is removed from `default extra-peer-dirs`. ([#54394](https://github.com/kubernetes/kubernetes/pull/54394),[ @sttts](https://github.com/sttts))

* kubectl no longer renders a List as suffix kind name for CRD resources ([#62512](https://github.com/kubernetes/kubernetes/pull/62512), [@dixudx](https://github.com/dixudx))

- Allow CSI drivers to just run offline expansion tests (#102740, @gnufied) [SIG Storage and Testing]
- Bump klog to v2.9.0, fixing log lines that render as byte arrays (#105407, @ehashman) [SIG Architecture, CLI, Cloud Provider, Cluster Lifecycle, Instrumentation and Storage]
- Fix overriding logs files on reboot. (#105614, @rphillips) [SIG Node]

have both been migrated.

### gRPC Probes Graduate to Beta

With Kubernetes 1.24, the [gRPC probes functionality](https://github.com/kubernetes/enhancements/issues/2727)
has entered beta and is available by default. You can now [configure startup, liveness, and readiness probes](https://kubernetes.io/docs/tasks/configure-pod-container/configure-liveness-readiness-startup-probes/#configure-probes) for your gRPC app