- For volumes that allow attaches across multiple nodes, attach and detach operations across different nodes are now executed in parallel. ([#88678](https://github.com/kubernetes/kubernetes/pull/88678), [@verult](https://github.com/verult)) [SIG Apps, Node and Storage]

- Reduce API server memory when many CRDs are loaded by sharing a single etcd3 client logger across all clients ([#111648](https://github.com/kubernetes/kubernetes/pull/111648), [@negz](https://github.com/negz)) [SIG API Machinery]

- Fixed node data lost in kube-scheduler for clusters with imbalance on number of nodes across zones ([#93355](https://github.com/kubernetes/kubernetes/pull/93355), [@maelk](https://github.com/maelk)) [SIG Scheduling]
- Fixed the EndpointSliceController to correctly create endpoints for IPv6-only pods.
  

* Remove flannel because now everything here is upstreamed ([#33860](https://github.com/kubernetes/kubernetes/pull/33860), [@luxas](https://github.com/luxas))
* Use patched golang1.7.1 for cross-builds targeting darwin ([#33803](https://github.com/kubernetes/kubernetes/pull/33803), [@ixdy](https://github.com/ixdy))

- Reduce API server memory when many CRDs are loaded by sharing a single etcd3 client logger across all clients ([#111650](https://github.com/kubernetes/kubernetes/pull/111650), [@negz](https://github.com/negz)) [SIG API Machinery]

    an `Ingress` creation request to the Federation API Server. The
    Federation control system then creates and maintains a single
    global virtual IP to load balance incoming HTTP(S) traffic across
    some or all the registered clusters, across all regions. Google's
    GCE L7 LoadBalancer is the first supported implementation, and
	is available in this release.
	([docs](http://kubernetes.io/docs/user-guide/federation/federated-ingress.md))

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