- Ignore `.mount` cgroups, fixing disappearing stats.
* A new field `terminationMessagePolicy` has been added to containers that allows
  a user to request FallbackToLogsOnError, which will read from the container's
  logs to populate the termination message if the user does not write to the
  termination message log file. The termination message file is now properly
  readable for end users and has a maximum size (4k bytes) to prevent abuse.

- `cel-go` has been bumped to `v0.23.2`. ([#129844](https://github.com/kubernetes/kubernetes/pull/129844), [@cici37](https://github.com/cici37)) [SIG API Machinery, Auth, Cloud Provider and Node]

- Added new feature gate called `RuntimeClassInImageCriApi` to address `kubelet` changes needed for KEP 4216.
  Noteable changes:
  1. Populate new `RuntimeHandler` field in CRI's `ImageSpec` struct during image pulls from container runtimes.

- E2e tests wait for `kube-root-ca.crt` to be populated in namespaces for use with projected service account tokens, reducing delays starting those test pods and errors in the logs. ([#107763](https://github.com/kubernetes/kubernetes/pull/107763), [@smarterclayton](https://github.com/smarterclayton))

- The EndpointSlice Controllers are now GA. The `EndpointSliceController` will not populate the `deprecatedTopology` field and will only provide topology information through the `zone` and `nodeName` fields. ([#99870](https://github.com/kubernetes/kubernetes/pull/99870), [@swetharepakula](https://github.com/swetharepakula))

- Improves validation errors for custom resources ([#81212](https://github.com/kubernetes/kubernetes/pull/81212), [@liggitt](https://github.com/liggitt))
- Populate object name for admission attributes when CREATE ([#53185](https://github.com/kubernetes/kubernetes/pull/53185), [@dixudx](https://github.com/dixudx))

- AdmissionReview objects sent for the creation of Namespace API objects now populate the `namespace` attribute consistently (previously the `namespace` attribute was empty for Namespace creation via POST requests, and populated for Namespace creation via server-side-apply PATCH requests) ([#95012](https://github.com/kubernetes/kubernetes/pull/95012), [@nodo](https://github.com/nodo)) [SIG API Machinery...

* CUSTOM_KUBE_DASHBOARD_BANNER environment variable will be used to populate notification banner in Kubernetes Dashboard add-on. ([#60639](https://github.com/kubernetes/kubernetes/pull/60639), [@konryd](https://github.com/konryd))

    * `kubectl create configmap` has a new option `--from-env-file` that populates a configmap from file which follows a key=val format for each line. ([#38882](https://github.com/kubernetes/kubernetes/pull/38882), [@fraenkel](https://github.com/fraenkel))

    * `kubectl create secret` has a new option `--from-env-file` that populates a secret from file which follows a key=val format for each line.

  * Printing/describe

**Affected Versions**:
  - kube-apiserver v1.29.0 - v1.29.3
  - kube-apiserver v1.28.0 - v1.28.8
  - kube-apiserver <= v1.27.12

**Fixed Versions**:
  - kube-apiserver v1.29.4