- Fixed a regression in `kube-proxy` where it might refuse to start if given
  single-stack `IPv6` configuration options on a node that has both `IPv4` and
  `IPv6` IPs. ([#121008](https://github.com/kubernetes/kubernetes/pull/121008), [@danwinship](https://github.com/danwinship))
- Fixed a regression in default configurations, which enabled `PodDisruptionConditions`

  which is not allowed. ([#121666](https://github.com/kubernetes/kubernetes/pull/121666), [@kerthcet](https://github.com/kerthcet)) [SIG Scheduling]
- Fixes a kube-apiserver log volume regression bug in default 1.27 configurations (introduced in 1.26, activated by the AggregatedDiscoveryEndpoint feature enablement in 1.27) ([#122074](https://github.com/kubernetes/kubernetes/pull/122074), [@ritazh](https://github.com/ritazh)) [SIG API Machinery]

- Fixed a regression in 1.29+ default configurations, where regular init containers may fail to start due to a temporary container runtime failure. ([#127162](https://github.com/kubernetes/kubernetes/pull/127162), [@gjkim42](https://github.com/gjkim42)) [SIG Node]

- New Metrics Added for Encryption Configuration Controller
  
  This release adds new metrics to the Encryption Configuration Controller to help monitor the automatic reloading of encryption configuration. The new metrics include:
  
  - `apiserver_encryption_config_controller_automatic_reload_failures_total`: Total number of failed automatic reloads of encryption configuration.

*   The admission webhook configurations API, part of the admissionregistration API, is now at v1beta1. Delete any existing webhook configurations before you upgrade, and update your configuration files to use the latest API. For this and the previous change, see also [the documentation](https://kubernetes.io/docs/admin/extensible-admission-controllers/#exter...

- The JWT authenticator configuration set via the `--authentication-config` flag is now dynamically reloaded as the file changes on disk. ([#123525](https...

- Kube-apiserver reported the last configuration hash as a label in
  
  - `apiserver_authentication_config_controller_last_config_info` metric after successfully loading the authentication configuration file.
  - `apiserver_authorization_config_controller_last_config_info` metric after successfully loading the authorization configuration file.

- `audit.k8s.io/v1beta1` and `audit.k8s.io/v1alpha1` audit policy configuration and audit events are deprecated in favor of `audit.k8s.io/v1`, available since v1.13. kube-apiserver invocations that specify alpha or beta policy configurations with `--audit-policy-file`, or explicitly request alpha or beta audit events with `--audit-log-version` / `--audit-webhook-version` must update to use `audit.k8s.io/v1`...

- Expose a `NewUnstructuredExtractor` from apply configurations `meta/v1` package that enables extracting objects into unstructured apply configurations. ([#103564](https://github.com/kubernetes/kubernetes/pull/103564), [@kevindelgado](https://github.com/kevindelgado))

- The Go API for logging configuration in `k8s.io/component-base` was moved to `k8s.io/component-base/logs/api/v1`. The configuration file format and command line flags are the same as before. ([#105797](https://github.com/kubernetes/kubernetes/pull/105797), [@pohly](https://github.com/pohly))