- The deprecated `--etcd-quorum-read` flag has been removed. Quorum reads are...

### Ephemeral Containers Graduate to Stable

  * Plugins

      * Introduces the ability to extend kubectl by adding third-party plugins. Developer preview, please refer to the documentation for instructions about how to use it. ([#37499](https://github.com/kubernetes/kubernetes/pull/37499), [@fabianofranz](https://github.com/fabianofranz))

  - `http_404_request_duration_ms` (the amount of time the server took to respond in ms)

  Also includes percentile groupings. The directory for the default 404 handler includes instructions on how to enable prometheus for monitoring and setting alerts.
  ([#79106](https://github.com/kubernetes/kubernetes/pull/79106), [@vbannai](https://github.com/vbannai))

### Instrumentation

- The `client.authentication.k8s.io/v1alpha1` ExecCredential has been removed. If you are using a client-go credential plugin that relies on the v1alpha1 API please contact the distributor of your plugin for instructions on how to migrate to the v1 API. ([#108616](https://github.com/kubernetes/kubernetes/pull/108616), [@margocrawf](https://github.com/margocrawf))

* Marked scheduler's scheduling_duration_seconds Summary metric as deprecated ([#86586](https://github.com/kubernetes/kubernetes/pull/86586), [@xiaoanyunfei](https://github.com/xiaoanyunfei))
* Add instructions about how to bring up e2e test cluster ([#85836](https://github.com/kubernetes/kubernetes/pull/85836), [@YangLu1031](https://github.com/YangLu1031))

      <!-- TODO: Add matches for the other possible XML encoding schemes -->
    </magic>
    <!-- XML files can start with a comment but then must not contain processing instructions.
         This should be rare so we assign lower priority here. Priority is also lower than text/html magics
         for them to be preferred for HTML starting with comment.-->
    <magic priority="30">

- Kubeadm: fix a bug when using external CA mode and trying to upgrade to 1.29 using "kubeadm upgrade apply". Show a warning that kubeadm cannot sign the new "super-admin.conf" as the host does not have a CA and show some instructions on how to manually migrate to the separate "admin.conf" and "super-admin.conf" kubeconfig files. ([#124682](https://github.com/kubernetes/kubernetes/pull/124682), [@neolit123](https://github.com/neolit123)) [SIG Cluster Lifecycle]

from the value obtained by executing and rounding the instructions individually.
An explicit <a href="#Numeric_types">floating-point type</a> <a href="#Conversions">conversion</a> rounds to
the precision of the target type, preventing fusion that would discard that rounding.
</p>

<p>
For instance, some architectures provide a "fused multiply and add" (FMA) instruction

- kubeadm: fixed a misleading output (typo) about control-plane joining instructions when executing the "kubeadm init" command. ([#128118](https://github.com/kubernetes/kubernetes/pull/128118), [@amaddio](https://github.com/amaddio))