because it frontends equivalent mirrors in other clouds.  Please point your clusters to the new registry going forward. \n\nAdmission/Policy integrations that have an allowlist of registries need to include `registry.k8s.io` alongside `k8s.gcr.io`.\nAir-gapped environments and image garbage-collection configurations will need to update to pre-pull and preserve required images under `registry.k8s.io` as well as `k8s.gcr.io`. ([#109938](https://github.com/kubernetes/kubernetes/pull/109938), [@dims]...

    - `apiserver_flowcontrol_demand_seats_smoothed`: Smoothed seat demands
    - `apiserver_flowcontrol_target_seats`: Seat allocation targets
    - `apiserver_flowcontrol_seat_fair_frac`: Fair fraction of server's concurrency to allocate to each priority level that can use it
    - `apiserver_flowcontrol_current_limit_seats`: current derived number of execution seats available to each priority level

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## Changelog since v1.11.0-alpha.1

### Other notable changes

* `kubeadm upgrade plan` now accepts a version which improves the UX nicer in air-gapped environments. ([#63201](https://github.com/kubernetes/kubernetes/pull/63201), [@chuckha](https://github.com/chuckha))