- The deprecated --interactive flag has been removed from kubectl logs. ([#65420](https://github.com/kubernetes/kubernetes/pull/65420), [@jsoref](https://github.com/jsoref))

- Added a new command line argument `--interactive` to kubectl. The new command line argument lets a user confirm deletion requests per resource interactively. ([#114530](https://github.com/kubernetes/kubernetes/pull/114530), [@ardaguclu](https://github.com/ardaguclu)) [SIG CLI and Testing]

### Introducing Windows CSI support alpha for Kubernetes

- Client-go exec credential plugins will pass stdin only when interactive terminal is detected on stdin. This fixes a bug where previously it was checking if **stdout** is an interactive terminal. ([#99654](https://github.com/kubernetes/kubernetes/pull/99654), [@ankeesler](https://github.com/ankeesler))

- Added `client-go` support for upgrading subresource fields from client-side to server-side management. ([#123484](https://github.com/kubernetes/kubernetes/pull/123484), [@erikgb](https://github.com/erikgb))
- Added `exec-interactive-mode` and `exec-provide-cluster-info` flags in kubectl config set-credentials command. ([#122023](https://github.com/kubernetes/kubernetes/pull/122023), [@ardaguclu](https://github.com/ardaguclu))

  * The bootstrap token system now allows token management and expiration
* The [`kubefed` federation bootstrap tool](https://kubernetes.io/docs/tutorials/federation/set-up-cluster-federation-kubefed/) has also graduated to beta.
* Interaction with container runtimes is now through the CRI interface, enabling easier integration of runtimes with the kubelet. Docker remains the default runtime via Docker-CRI (which moves to beta).

- The `--interactive` flag in `kubectl delete` is now visible to all users by default. ([#120416](https://github.com/kubernetes/kubernetes/pull/120416), [@ardaguclu](https://github.com/ardaguclu))

  * <strong>New GUI</strong> (dashboard) allows you to get started quickly and enables the same
functionality found in the CLI as a more approachable and discoverable way of
interacting with the system. Note: the GUI is enabled by default in 1.2 clusters.

This release also contains a number of bug fixes to the feature set. Aspiring plugin authors can look at [sample-exec-plugin](https://github.com/ankeesler/sample-exec-plugin) as a way to get started.

  - Support allocatable resources overrides via VMSS tags
  - Add missing stable labels in template nodes
  - Proactively set instance status to deleting on node deletions
  
  ### Cluster API
  - Migrate interaction with the API from using internal types to using Unstructured
  - Improve tests to work better with constrained resources
  - Add support for node auto-discovery
  - Add support for `--cloud-config`