* If you depended on that previous behavior, you might need to update your code. As always, make sure your tests pass before merging the upgrade.

## 0.90.1

### Upgrades

#### Cluster Discovery/Bootstrap

* [beta] The authentication and verification mechanism called Bootstrap Tokens is improved. Use Bootstrap Tokens to easily add new node identities to a cluster. ([#130](https://github.com/kubernetes/enhancements/issues/130), [@luxas](https://github.com/luxas), [@jbeda](https://github.com/jbeda)).

    * master subnet.  It is ignored if the service is not on Azure, if the type is not
    * LoadBalancer, or if the load balancer is not internal.
* Adds a command-line argument to kube-apiserver called ([#51698](https://github.com/kubernetes/kubernetes/pull/51698), [@rphillips](https://github.com/rphillips))
    * --alpha-endpoint-reconciler-type=(master-count, lease, none) (default

                type: object
                x-kubernetes-preserve-unknown-fields: true
              pluginName:
                description: The plugin name to be used in the Envoy configuration
                  (used to be called `rootID`).
                maxLength: 256
                minLength: 1
                type: string
              priority:
                description: Determines ordering of `WasmPlugins` in the same `phase`.