([#66485](https://github.com/kubernetes/kubernetes/pull/66485), [@bmoyles0117](https://github.com/bmoyles0117))
- cluster/gce: Kubernetes now generates consistent key sizes in config-default.sh using /dev/urandom instead of /dev/random   ([#67139](https://github.com/kubernetes/kubernetes/pull/67139), [@yogi-sagar](https://github.com/yogi-sagar))

### SIG Instrumentation

    For more information on deprecating auto-detecting cloud providers in kubelet, see PR [#51312](https://github.com/kubernetes/kubernetes/pull/51312) and [announcement](https://groups.google.com/forum/#!topic/kubernetes-dev/UAxwa2inbTA).

- The `PersistentVolumeLabel` admission controller in the API server is deprecated.

* AWS
  * Support for ap-northeast-2 region (Seoul)
  * Allow cross-region image pulling with ECR
  * More reliable kube-up/kube-down
  * Enable ICMP Type 3 Code 4 for ELBs
  * ARP caching fix
  * Use /dev/xvdXX names
  * ELB:
    * ELB proxy protocol support 
	* mixed plaintext/encrypted ports support in ELBs
    * SSL support for ELB listeners
  * Allow VPC CIDR to be specified (experimental)

  * Upgrade Node Problem Detector to v0.4.1. New features added:

    * Add /dev/kmsg support for kernel log parsing. ([#112](https://github.com/kubernetes/node-problem-detector/pull/112), [@euank](https://github.com/euank))

- Text logging in Kubernetes components now uses [textlogger](https://pkg.go.dev/k8s.io/klog/v2@v2.120.0/textlogger). The same split streams of info and error log entries with buffering of info entries is now also supported for text output (off by default, alpha feature). Previously, this was only supported for JSON. Performance...

## Changelog since v1.4.3

### Other notable changes

* Update the GCI image to gci-dev-55-8872-18-0 ([#35243](https://github.com/kubernetes/kubernetes/pull/35243), [@maisem](https://github.com/maisem))

Certificate management has become more robust in 1.15, with kubeadm now seamlessly rotating all your certificates (on upgrades) before they expire. Check the [kubeadm documentation](https://github.com/kubernetes/website/blob/dev-1.15/content/en/docs/reference/setup-tools/kubeadm/kubeadm-alpha.md) for information on how to manage your certificates.

The kubeadm configuration file API is moving from v1beta1 to v1beta2 in 1.15.

### Storage Capacity Tracking

* Allow ScaleIO volumes to be provisioned without having to first manually create /dev/disk/by-id path on each kubernetes node (if not already present) ([#66174](https://github.com/kubernetes/kubernetes/pull/66174), [@ddebroy](https://github.com/ddebroy))

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