- Kubeadm: the `--feature-gates` flag is deprecated and no-op for `kubeadm upgrade apply/plan`, and it will be removed in a future release. The upgrade workflow is not designed to reconfigure the cluster. Please edit the 'featureGates' field of ClusterConfiguration which is defined in the kube-system/kubeadm-config ConfigMap instead. ([#125797](https://github.com/kubernetes/kubernetes/pull/125797), [@SataQiu](https://github.com/SataQiu))

- Remove GA featuregate RemoveSelfLink ([#122468](https://github.com/kubernetes/kubernetes/pull/122468), [@carlory](https://github.com/carlory)) [SIG API Machinery]
- Remove GA featuregate about ExperimentalHostUserNamespaceDefaultingGate in 1.30 ([#122088](https://github.com/kubernetes/kubernetes/pull/122088), [@bzsuni](https://github.com/bzsuni)) [SIG Node]

- Remove GA featuregate about CSIMigrationvSphere in 1.29 ([#121291](https://github.com/kubernetes/kubernetes/pull/121291), [@bzsuni](https://github.com/bzsuni)) [SIG API Machinery, Node and Storage]

- Added the `MatchConditions` field to `ValidatingWebhookConfiguration` and `MutatingWebhookConfiguration` for the v1beta and v1 apis. 
  
  The `AdmissionWebhookMatchConditions` featuregate is now in Alpha ([#116261](https://github.com/kubernetes/kubernetes/pull/116261), [@ivelichkovich](https://github.com/ivelichkovich)) [SIG API Machinery and Testing]