- `kubelet` now emits a metric for end-to-end pod startup latency, including image pull. ([#121041](https://github.com/kubernetes/kubernetes/pull/121041), [@ruiwen-zhao](https://github.com/ruiwen-zhao))
- `kubelet` now exposes latency metrics of different stages of the node startup. ([#118568](https://github.com/kubernetes/kubernetes/pull/118568), [@qiutongs](https://github.com/qiutongs))

### Documentation

- Fixes a bug where images pinned by the container runtime can be garbage collected by kubelet. ([#120054](https://github.com/kubernetes/kubernetes/pull/120054), [@ruiwen-zhao](https://github.com/ruiwen-zhao)) [SIG Node]

- A new metric `lifecycle_handler_sleep_terminated_total` is added to record how many times LifecycleHandler sleep got unexpectedly terminated. ([#122456](https://github.com/kubernetes/kubernetes/pull/122456), [@AxeZhan](ht...

### Bug or Regression

- AcceleratorStats will be available in the Summary API of kubelet when cri_stats_provider is used. ([#96873](https://github.com/kubernetes/kubernetes/pull/96873), [@ruiwen-zhao](https://github.com/ruiwen-zhao)) [SIG Node]

- Fixes a bug where images pinned by the container runtime can be garbage collected by kubelet. ([#120053](https://github.com/kubernetes/kubernetes/pull/120053), [@ruiwen-zhao](https://github.com/ruiwen-zhao)) [SIG Node]
- Ignore context canceled from validate and mutate webhook ([#120155](https://github.com/kubernetes/kubernetes/pull/120155), [@divyasri537](https://github.com/divyasri537)) [SIG API Machinery]

- Fixes a bug where images pinned by the container runtime can be garbage collected by kubelet. ([#120056](https://github.com/kubernetes/kubernetes/pull/120056), [@ruiwen-zhao](https://github.com/ruiwen-zhao)) [SIG Node]

### Bug or Regression

- AcceleratorStats will be available in the Summary API of kubelet when cri_stats_provider is used. ([#97018](https://github.com/kubernetes/kubernetes/pull/97018), [@ruiwen-zhao](https://github.com/ruiwen-zhao)) [SIG Node]
- Fixed FibreChannel volume plugin corrupting filesystems on detach of multipath volumes. ([#97013](https://github.com/kubernetes/kubernetes/pull/97013), [@jsafrane](https://github.com/jsafrane)) [SIG Storage]

- Fixes a bug where images pinned by the container runtime can be garbage collected by kubelet. ([#120055](https://github.com/kubernetes/kubernetes/pull/120055), [@ruiwen-zhao](https://github.com/ruiwen-zhao)) [SIG Node]