- kubeadm: Improved resiliency when it comes to updating the `kubeadm-config` configmap upon new control plane joins or resets. This allows for safe multiple control plane joins and/or resets. ([#76821](https://github.com/kubernetes/kubernetes/pull/76821), [@ereslibre](https://github.com/ereslibre))

### Federation

#### kubefed
* Flag cleanup ([#41335](https://github.com/kubernetes/kubernetes/pull/41335), [@irfanurrehman](https://github.com/irfanurrehman))
* Create configmap for the cluster kube-dns when cluster joins and remove when it unjoins ([#39338](https://github.com/kubernetes/kubernetes/pull/39338), [@irfanurrehman](https://github.com/irfanurrehman))

ril
rimini.it
rindal.no
ringebu.no
ringerike.no
ringsaker.no
rio
rio.br
riobranco.br
riopreto.br
rip
rishiri.hokkaido.jp
rishirifuji.hokkaido.jp
risor.no
rissa.no
risør.no
ritto.shiga.jp
rivne.ua
rj.gov.br
rj.leg.br
rl.no
rm.it
rn.gov.br
rn.it
rn.leg.br
ro
ro.eu.org
ro.gov.br
ro.it
ro.leg.br
roan.no

ril
rimini.it
rindal.no
ringebu.no
ringerike.no
ringsaker.no
rio
rio.br
riobranco.br
riopreto.br
rip
rishiri.hokkaido.jp
rishirifuji.hokkaido.jp
risor.no
rissa.no
risør.no
ritto.shiga.jp
rivne.ua
rj.gov.br
rj.leg.br
rl.no
rm.it
rn.gov.br
rn.it
rn.leg.br
ro
ro.eu.org
ro.gov.br
ro.it
ro.leg.br
roan.no

Jonas Meinertz Hansen, Joshi Rekha, Julian Viereck, Keiji Ariyama, Kenton Lee,
Krishna Sankar, Kristina Chodorow, Linchao Zhu, Lukas Krecan, Mark Borgerding,
Mark Daoust, Moussa Taifi, Nathan Howell, Naveen Sundar Govindarajulu, Nick
Sweeting, Niklas Riekenbrauck, Olivier Grisel, Patrick Christ, Povilas
Liubauskas, Rainer Wasserfuhr, Romain Thouvenin, Sagan Bolliger, Sam Abrahams,