* Support newlines in release notes
* Improved error message when docker daemon is not responding
* The configuration database is now stored in-memory
* Preserve the stacktrace of PowerShell errors
* Display service stacktrace in error windows
* Moby: use default sysfs settings, transparent huge pages disabled
* Moby: cgroup mount to support systemd in containers

**Known issues**

* Only UTF-8 passwords are supported for host filesystem sharing
* Docker automatically disables lingering net adapters. The only way to remove them is manually using `devmgmt.msc` as documented in [Troubleshooting](/manuals/desktop/troubleshoot-and-support/troubleshoot/known-issues.md).

### Beta 22 Release (2016-08-11 1.12.0-beta22)

Unreleased. See Beta 23 for changes.

**Known issues**

* Docker automatically disables lingering net adapters. The only way to remove them is manually using `devmgmt.msc` as documented in [Troubleshooting](/manuals/desktop/troubleshoot-and-support/troubleshoot/known-issues.md).

### Beta 21 Release (2016-07-28 1.12.0-beta21)

**New**

* Docker for Windows is now available from two channels: **stable** and **beta**. New features and bug fixes go out first in auto-updates to users in the beta channel. Updates to the stable channel are much less frequent and happen in sync with major and minor releases of the Docker Engine. Only features that are well-tested and ready for production are added to the stable channel releases. For downloads of both and more information, see [Install Docker Desktop on Windows](/manuals/desktop/setup/install/windows-install.md).

* Removed the docker host name. Containers with exported ports are reachable via localhost.

* The UI shows whether the user is on beta or stable channel

**Upgrades**

* Docker 1.12.0 with experimental features
* Docker Machine 0.8.0
* Docker Compose 1.8.0

**Bug fixes and minor changes**

* Fixed networking issue when transmitting data to a container via an exposed port.
* Include the sources for qemu-img
* Fixed the migration from toolbox when the user has a space in its login
* Disable the migration from toolbox when hyperV is not yet activated
* More windows can be closed with ESC
* Added the channel to crash reports
* Fixed a path rewriting bug that happens on Windows insider build 14367
* Simplified the MobyLinux.ps1 script

**Known issues**

* Older Kitematic versions are not compatible with Docker for Windows. You need to manually delete the `C:\Program Files\Docker\Kitematic` folder before you click **Open Kitematic...** systray link.

### Beta 20 Release (2016-07-19 1.12.0-rc4-beta20)

**New**

* The UI option to disable port forwarding to `localhost` has been removed

**Bug fixes and minor changes**

* Fixed `docker.sock` permission issues
* Don't check for update when the settings panel opens
* Removed obsolete DNS workaround
* Use the secondary DNS server in more circumstances
* Limit the number of concurrent port forwards to avoid running out of resources
* Store the database as a "bare" git repo to avoid corruption problems

### Beta 19 Release (2016-07-14 1.12.0-rc4-beta19)

**New**

* Added an option to opt-out from sending usage statistics (only on the Edge channel for now)
* New error dialog box to upload crash reports

**Upgrades**

* Docker 1.12.0 RC4
* Docker Compose 1.8.0 RC2
* Docker Machine 0.8.0 RC2
* Linux kernel 4.4.15

**Bug fixes and minor changes**

* `com.docker.slirp`: included the DNS TCP fallback fix, required when UDP responses are truncated
* `docker build/events/logs/stats...` won't leak when interrupted with Ctrl-C
* Disable all buttons on Update Window when a version is downloading

### Beta 18.1 Release (2016-07-07 1.12.0-rc3-beta18.1)

> [!NOTE]
>
> Docker 1.12.0 RC3 release introduces a backward incompatible change from RC2. You can fix this by recreating or updating your containers.

**Hotfix**

* Fixed issue resulting in error "Hijack is incompatible with use of CloseNotifier", reverts previous fix for `Ctrl-C` during build.