November 2014 web platform update

Now available in Chrome
Limited availability

:indeterminate: The :indeterminate CSS pseudo-class selects any form element whose state is indeterminate, such as checkboxes that have been set to an indeterminate state with JavaScript, or radio buttons which are members of a group in which all radio buttons are unchecked. Learn more.

Array.of(): The Array.of() and typed array .of() static methods create new arrays from the values of any number of arguments. Learn more.
:indeterminate: The :indeterminate CSS pseudo-class selects any form element whose state is indeterminate, such as checkboxes that have been set to an indeterminate state with JavaScript, or radio buttons which are members of a group in which all radio buttons are unchecked. Learn more.
Screen orientation: The screen.orientation API gets information about the orientation of the viewport, such as landscape or portrait. With this API, you can adapt an application's layout or behavior in response to changes in orientation. Learn more.