([#60371](https://github.com/kubernetes/kubernetes/pull/60371), [@superbrothers](https://github.com/superbrothers))
* The shortcuts that were moved server-side in at least 1.9 have been removed from being hardcoded in kubectl. This means that the client-based restmappers have been moved to client-go, where everyone who needs them can have access. ([#63507](https://github.com/kubernetes/kubernetes/pull/63507), [@deads2k](https://github.com/deads2k))

- Kubeadm: fixed a regression where the JoinConfiguration.discovery.timeout was no longer respected and the value was always hardcoded to "5m" (5 minutes). ([#125481](https://github.com/kubernetes/kubernetes/pull/125481), [@neolit123](https://github.com/neolit123)) [SIG Cluster Lifecycle]

- Fix kubectl completion zsh to use any command name rather than hardcoded kubectl ([#109235](https://github.com/kubernetes/kubernetes/pull/109235), [@soltysh](https://github.com/soltysh)) [SIG CLI]

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