- 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))

- 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))

### 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:

### Feature

- [`KT-57738`](https://youtrack.jetbrains.com/issue/KT-57738) K2: unresolved class fields and methods in kotlin scripts
- [`KT-59449`](https://youtrack.jetbrains.com/issue/KT-59449) K2: Diagnostic messages contain debugging-style rendered FIR
- [`KT-59849`](https://youtrack.jetbrains.com/issue/KT-59849) K2: IllegalArgumentException: List has more than one element

- 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), [@p...

- 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]

- 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))

- When specifying an invalid value for a label, it was not always clear which label the value was specified for. Starting with this release, the label's key is included in such error messages, which makes debugging easier. ([#77144](https://github.com/kubernetes/kubernetes/pull/77144), [@kenegozi](https://github.com/kenegozi))

*   Volumes are now checked for available state before attempting to attach or delete a volume in EBS. ([#55008](https://github.com/kubernetes/kubernetes/pull/55008),[ @gnufied](https://github.com/gnufied))
*   Fixed a bug where error log messages were breaking into two lines. ([#49826](https://github.com/kubernetes/kubernetes/pull/49826),[ @dixudx](https://github.com/dixudx))