[SIGs]: https://github.com/kubernetes/community/blob/master/sig-list.md


## Major Themes

Kubernetes is developed by community members whose work is organized into
[Special Interest Groups][]. For the 1.8 release, each SIG provides the
themes that guided their work.

[Special Interest Groups]: https://github.com/kubernetes/community/blob/master/sig-list.md

### SIG API Machinery

Features for this release were tracked via the use of the [kubernetes/features](https://github.com/kubernetes/features) issues repo.  Each Feature issue is owned by a Special Interest Group from the [kubernetes/community](https://github.com/kubernetes/community/blob/master/sig-list.md).

### Autoscaling
* **[alpha]** The Horizontal Pod Autoscaler now supports drawing metrics through the API server aggregator.

cologne

// commbank : COMMONWEALTH BANK OF AUSTRALIA
// https://www.iana.org/domains/root/db/commbank.html
commbank

// community : Binky Moon, LLC
// https://www.iana.org/domains/root/db/community.html
community

// company : Binky Moon, LLC
// https://www.iana.org/domains/root/db/company.html
company

// compare : Registry Services, LLC

Features for this release were tracked via the use of the [kubernetes/features](https://github.com/kubernetes/features) issues repo. Each Feature issue is owned by a Special Interest Group from [kubernetes/community](https://github.com/kubernetes/community)

## Kubefed

## Major themes

Kubernetes is developed by community members whose work is organized into
[Special Interest Groups](https://github.com/kubernetes/community/blob/master/sig-list.md), which provide the themes that guide their work. For the 1.9 release, these themes included:

### API Machinery

### SIG Big Data

During the 1.13 release cycle, SIG Big Data has been focused on community engagements relating to 3rd-party project integrations with Kubernetes. There have been no impacts on the 1.13 release.

### SIG CLI

### Dockershim deprecation

Docker as an underlying runtime is being deprecated. Docker-produced images will continue to work in your cluster with all runtimes, as they always have.
The Kubernetes community [has written a blog post about this in detail](https://blog.k8s.io/2020/12/02/dont-panic-kubernetes-and-docker/) with [a dedicated FAQ page for it](https://blog.k8s.io/2020/12/02/dockershim-faq/).

#### Extensibility

- The community has been asking for continuing support of extensibility, so this cycle features more work around CRDs and API Machinery. Most of the enhancements in this cycle were from SIG API Machinery and related areas.

- New conformance tests added for API Aggregation. ([#63947](https://github.com/kubernetes/kubernetes/pull/63947), [@jennybuckley](https://github.com/jennybuckley))
- Moved fluentd-elasticsearch addon images to community controlled location ([#73819](https://github.com/kubernetes/kubernetes/pull/73819), [@coffeepac](https://github.com/coffeepac))

- Docker runtime support using dockershim in the kubelet is now completely removed in 1.24. The kubelet used to have a module called dockershim, which implements CRI support for Docker, and it has seen maintenance issues in the Kubernetes community. From 1.24 onwards, please move to a container runtime that is a full-fledged implementation of CRI (v1alpha1 or v1 compliant) as they become available. ([#97252](https://github.com/kubernetes/kubernetes/pull/97252), [@dims](https://github.com/dims))...