W3C launched a new Device APIs and Policy Working Group, co-Chaired by Robin Berjon (Vodafone) and Frederick Hirsch (Nokia). The group's mission is to create client-side APIs that enable the development of Web Applications and Web Widgets that interact with devices services such as Calendar, Contacts, and Camera. Additionally, the group will produce a framework for the expression of security policies that govern access to security-critical APIs (such as the APIs listed previously). Per its charter, this group will conduct its work in public. Learn more about the Device APIs and Policy Working Group.
Hmm, they could be interested in the MPEG Extensible Middleware (MXM) which also specifies API that might be exploited by the W3C Device API.