- The `SidecarContainers` feature has graduated to GA. 'SidecarContainers' feature gate was locked to default value and will be removed in v1.36. If you were setting this feature gate explicitly, please remove it now. ([#129731](https://github.com/kubernetes/kubernetes/pull/129731), [@gjki...

- The `SidecarContainers` feature has graduated to `beta` and is enabled by default. ([#121579](https://github.com/kubernetes/kubernetes/pull/121579), [@gjkim42](https://github.com/gjkim42))

- Node podresources API now includes init containers with containerRestartPolicy of `Always` when `SidecarContainers` feature is enabled. ([#120718](https://github.com/kubernetes/kubernetes/pull/120718), [@gjkim42](https://github.com/gjkim42))

- The new feature gate "SidecarContainers" is now available. This feature introduces sidecar containers, a new type of init container that starts before other containers but remains running for the full duration of the pod's lifecycle and will not block pod termination. ([#116429](h...

- Fixed a regression in default 1.29 configurations with the `SidecarContainers` feature enabled, where init containers may fail to start due to a temporary container runtime failure. ([#126543](https://github.com/kubernetes/kubernetes/pull/126543), [@gjkim42](https://github.com/gjkim42))