The Web Applications Working Group has published a W3C Recommendation of Widget Interface. This specification defines an application programming interface (API) for widgets that provides, amongst other things, functionality for accessing a widget’s metadata and persistently storing data.
The Web Applications Working Group has also published a Last Call Working Draft of Pointer Lock. This specification defines an API that provides scripted access to raw mouse movement data while locking the target of mouse events to a single element and removing the cursor from view. This is an essential input mode for certain classes of applications, especially first person perspective 3D applications and 3D modelling software. Comments are welcome through 28 November.
Learn more about the Rich Web Client Activity.