* `kubectl run --env` no longer supports CSV parsing. To provide multiple env vars, use the `--env` flag multiple times instead of having env vars separated by commas. E.g. `--env ONE=1 --env TWO=2` instead of `--env ONE=1,TWO=2`. ([#47460](https://github.com/kubernetes/kubernetes/pull/47460), [@mengqiy](https://github.com/mengqiy))

- Kubeadm: fix a bug where kubeadm upgrade is failed if the content of the `kubeadm-flags.env` file is `KUBELET_KUBEADM_ARGS=""` ([#136131](https://github.com/kubernetes/kubernetes/pull/136131), [@carlory](https://github.com/carlory)) [SIG Cluster Lifecycle]

* corrects a race condition in bootstrapping aggregated cluster roles in new HA clusters ([#63761](https://github.com/kubernetes/kubernetes/pull/63761), [@liggitt](https://github.com/liggitt))

    * `kubectl create configmap` has a new option `--from-env-file` that populates a configmap from file which follows a key=val format for each line. ([#38882](https://github.com/kubernetes/kubernetes/pull/38882), [@fraenkel](https://github.com/fraenkel))

    * `kubectl create secret` has a new option `--from-env-file` that populates a secret from file which follows a key=val format for each line.

- Added a new container based image for running e2e tests ([#69368](https://github.com/kubernetes/kubernetes/pull/69368), [@dims](https://github.com/dims))
- The `LC_ALL` and `LC_MESSAGES` env vars can now be used to set desired locale for `kubectl` while keeping `LANG` unchanged. ([#69500](https://github.com/kubernetes/kubernetes/pull/69500), [@m1kola](https://github.com/m1kola))

- Adding support for multiple `--from-env-file flags`. ([#104232](https://github.com/kubernetes/kubernetes/pull/104232), [@lauchokyip](https://github.com/lauchokyip))
- Adding support for multiple `--from-env-file` flags. ([#101646](https://github.com/kubernetes/kubernetes/pull/101646), [@lauchokyip](https://github.com/lauchokyip))

- Enabled beta feature HonorPVReclaimPolicy by default. ([#109035](https://github.com/kubernetes/kubernetes/pull/109035), [@deepakkinni](https://github.com/deepakkinni))
- Env var for additional cli flags used in the csi-proxy binary when a Windows nodepool is created with `kube-up.sh` ([#107806](https://github.com/kubernetes/kubernetes/pull/107806), [@mauriciopoppe](https://github.com/mauriciopoppe))

  - Debian-base to v1.9.0
  - Debian-iptables to v1.6.7
  - setcap to v2.0.4 (#106143, @cpanato) [SIG Release and Testing]

### Failing Test

- Fixes hostpath storage e2e tests within SELinux enabled env (#105786, @Elbehery) [SIG Testing]

### Bug or Regression

- EndpointSlice Mirroring controller now cleans up managed EndpointSlices when a Service selector is added (#106132, @robscott) [SIG Apps, Network and Testing]

- Kubectl: Previously users cannot provide arguments to a external diff tool via KUBECTL_EXTERNAL_DIFF env. This release now allow users to specify args to KUBECTL_EXTERNAL_DIFF env. ([#95292](https://github.com/kubernetes/kubernetes/pull/95292), [@dougsland](https://github.com/dougsland)) [SIG CLI]

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