The Second Screen Presentation Working Group has published a Working Draft of Remote Playback API. This specification defines an API extending the HTMLMediaElement that enables controlling remote playback of media from a web page. It aims to make remote playback devices such as connected TVs, projectors or audio-only speakers, available to the Web and takes into account playback devices that are attached using wired (HDMI, DVI, or similar) and wireless technologies (Miracast, Chromecast, DLNA, AirPlay, or similar).

The Second Screen Presentation Working Group invites implementation of the Candidate Recommendation of Presentation API. This specification defines an API to enable web content to access external presentation-type displays and use them for presenting web content.

The Spatial Data on the Web Working Group, a joint endeavor by W3C and OGC, has published an updated version of the Time Ontology in OWL, first published by the Semantic Web Best Practices and Deployment Working Group in September 2006. The ontology has been in widespread use since that time despite two particular problems: the uncertain status of the work and its lack of support for calendar systems other than the Gregorian calendar. The SDW WG is addressing the first issue by taking the specification through the full standards process of both W3C and OGC. The second problem is fully resolved in the new draft, so that the Time Ontology is able to support any Temporal Reference System. Further requirements identified by the WG are also being addressed.

The Web Annotation Working Group invites implementation of the Candidate Recommendation of Web Annotation Protocol. Annotations are typically used to convey information about a resource or associations between resources. Simple examples include a comment or tag on a single web page or image, or a blog post about a news article. The Web Annotation Protocol describes the transport mechanisms for creating and managing annotations in a method that is consistent with the Web Architecture and REST best practices.