### Feature

- JSON log output is configurable and now supports writing info messages to stdout and error messages to stderr. Info messages can be buffered in memory. The default is to write both to stdout without buffering, as before. ([#104873](https://github.com/kubernetes/kubernetes/pull/104873), [@pohly](https://github.com/pohly))

### Other (Cleanup or Flake)

- Client-go: reduce verbosity of "Starting/Stopping reflector" messages to 3 again ([#102788](https://github.com/kubernetes/kubernetes/pull/102788), [@pohly](https://github.com/pohly)) [SIG API Machinery]
- Update the Debian images to pick up CVE fixes in the base images:

  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.
  Each pod may have up to 12k bytes of termination messages before the contents
  of each will be truncated.
* Do not delete pod objects until all its compute resource footprint has been
  reclaimed.
  - This feature prevents the node and scheduler from oversubscribing resources

    * Some refactoring of error/status messages and functions to align with new approach.
* This PR will leverage subtests on the existing table tests for the scheduler units. ([#63661](https://github.com/kubernetes/kubernetes/pull/63661), [@xchapter7x](https://github.com/xchapter7x))
    * Some refactoring of error/status messages and functions to align with new approach.

- The `--quiet` option to `kubectl run` now suppresses resource deletion messages emitted when the `--rm` option is specified. ([#73266](https://github.com/kubernetes/kubernetes/pull/73266), [@awh](https://github.com/awh))

- Modified log messages that were logged with `"v":0` in JSON output although they were debug messages with a higher verbosity. ([#106978](https://github.com/kubernetes/kubernetes/pull/106978), [@pohly](https://github.com/pohly))

- Migrate some log messages to structured logging in `pkg/volume/plugins.go`. ([#101510](https://github.com/kubernetes/kubernetes/pull/101510), [@huchengze](https://github.com/huchengze))

- Kube-controller-manager: increased the global level for broadcaster's logging to 3 so that users can ignore event messages by lowering the logging level. It reduces information noise. ([#122293](https://github.com/kubernetes/kubernetes/pull/122293), [@mengjiao-liu](https://github.com/mengjiao-liu))

### Other (Cleanup or Flake)

- Fixes the flooding warning messages about setting volume ownership for configmap/secret volumes ([#92878](https://github.com/kubernetes/kubernetes/pull/92878), [@jvanz](https://github.com/jvanz)) [SIG Instrumentation, Node and Storage]