New alpha features include:
* Online volume resizing will increase the filesystem size of a resized volume without requiring a Pod restart.
* AWS EBS and GCE PD volumes support increased limits on the maximum number of attached volumes per node.
* Subpath volume directories can be created using DownwardAPI environment variables.

### SIG Windows

//
// An AWS EBS disk must exist before mounting to a container. The disk
// must also be in the same AWS zone as the kubelet. An AWS EBS disk
// can only be mounted as read/write once. AWS EBS volumes support
// ownership management and SELinux relabeling.
message AWSElasticBlockStoreVolumeSource {
  // volumeID is unique ID of the persistent disk resource in AWS (Amazon EBS volume).

- [aws-alb-ingress-controller v1.0.0](https://github.com/kubernetes-sigs/aws-alb-ingress-controller/releases/tag/v1.0.0)
- [aws-ebs-csi-driver v0.1](https://github.com/kubernetes-sigs/aws-ebs-csi-driver/releases/tag/v0.1.0)
- [cloudprovider-aws external v0.1.0](https://github.com/kubernetes/cloud-provider-aws/blob/master/changelogs/CHANGELOG-0.1.md)

### SIG Azure

- Fix panic when processing Azure HTTP response. ([#68210](https://github.com/kubernetes/kubernetes/pull/68210), [@feiskyer](https://github.com/feiskyer))
- Fix volume limit for EBS on m5 and c5 instance types ([#66397](https://github.com/kubernetes/kubernetes/pull/66397), [@gnufied](https://github.com/gnufied))

* Kubenet host-port support through iptables ([#25604](https://github.com/kubernetes/kubernetes/pull/25604), [@freehan](https://github.com/freehan))
* Add metrics support for a GCE PD, EC2 EBS & Azure File volumes ([#25852](https://github.com/kubernetes/kubernetes/pull/25852), [@vishh](https://github.com/vishh))

 - CSI migration of AWS EBS volumes requires AWS EBS CSI driver ver. 1.0 that supports `allowAutoIOPSPerGBIncrease` parameter in StorageClass. ([#101082](https://github.com/kubernetes/kubernetes/pull/101082), [@jsafrane](https://github.com/jsafrane))

//
// An AWS EBS disk must exist before mounting to a container. The disk
// must also be in the same AWS zone as the kubelet. An AWS EBS disk
// can only be mounted as read/write once. AWS EBS volumes support
// ownership management and SELinux relabeling.
type AWSElasticBlockStoreVolumeSource struct {
	// volumeID is unique ID of the persistent disk resource in AWS (Amazon EBS volume).

### AWS

- Kubernetes will now use the zone from the node for topology aware aws-ebs volume creation to reduce unnecessary cloud provider calls. ([#78276](https://github.com/kubernetes/kubernetes/pull/78276), [@zhan849](https://github.com/zhan849))

      "io.k8s.api.core.v1.AWSElasticBlockStoreVolumeSource": {
        "description": "Represents a Persistent Disk resource in AWS.\n\nAn AWS EBS disk must exist before mounting to a container. The disk must also be in the same AWS zone as the kubelet. An AWS EBS disk can only be mounted as read/write once. AWS EBS volumes support ownership management and SELinux relabeling.",
        "properties": {
          "fsType": {

If CSI Migration is working properly, Kubernetes end users shouldn’t notice a difference.
After migration, Kubernetes users may continue to rely on all the functionality of in-tree storage plugins using the existing interface.
- CSI Migration feature is turned on by default but stays in Beta for GCE PD, AWS EBS, and Azure Disk in 1.23.