Changelog

Most image assets in the Design Checklist have been updated to reflect the current UI.

Updated all image assets to comply with the UX guidelines.
Split the lengthy design checklist document by its major headings into seven shorter, better chunked files for faster loading and less scrolling.
For better consistency, replaced "expanded controls" with "expanded controller" and replaced "persistent controls" with "mini controller".

Most of the images for Android, and many for Web Receivers have been updated throughout.
In Sender stops cast, Clarified recommended behavior for the Stop Casting user action.
Updated recommended labeling in the following sections:
In Sender volume controls, updated volume control guidelines extensively.
In Cast sequence, added clarification about where content starts for each sequence variation.
Changed "Cast menu" to "Cast dialog" throughout.
In Cast dialog, added the recommendation to use the MediaRouter component for Android or follow the reference app examples for iOS, Chrome, or custom implementations.
In Cast dialog, while casting, removed "Tapping a Web Receiver / content item, closes the cast menu and shows the full controls and info for that content item," as that behavior is not implemented.
In Sender volume control, clarified that the volume slider in the sender app must reflect volume changes made by the Chromecast remote control.
In Sender notification, clarified that the developer must provide an "X" to stop casting; this is not provided by the framework.

In Sender expanded controller, "Identify elapsed time and content duration for media streams" is restated as a best practice.

Web Receiver status is no longer required for the Cast dialog devices list.
Web Receiver status and name is no longer required for the lockscreen for music apps.
For Android, the volume slider with the Cast icon must appear when pressing the volume hardware keys.
Controlling the volume of a Cast session using volume hardware buttons on a mobile device is no longer required for iOS.
Use the app icon instead of the cast icon on the notification bar when casting.
Translations of cast terminology are now available at Cast Terminology.

Sender notification and Sender lock screen can be implemented in Android only; there is no provision for these in iOS

Cast button states checklist requirements have been updated to reflect the new ON / Connected state of the cast icon

Images used in this guide are courtesy of the Blender Foundation, shared under copyright or Creative Commons license.

Elephant's Dream: (c) copyright 2006, Blender Foundation / Netherlands Media Art Institute / www.elephantsdream.org
Sintel: (c) copyright Blender Foundation | www.sintel.org
Tears of Steel: (CC) Blender Foundation | mango.blender.org