Twelfth in the series, the Web3D 2007 International Symposium will address a wide range of topics about 3D and Multimedia on the Web Topics include languages, tools, rendering techniques, human-computer interaction, mobile devices and innovative applications. As in previous years, this event will be sponsored by ACM SIGGRAPH and held in cooperation with both EuroGraphics and the Web3D Consortium. The annual Web3D Symposium is a major event that unites researchers, developers, experimenters, and content creators in a dynamic learning environment. Attendees share and explore methods of using, enhancing, or creating new 3D Web and Multimedia technologies, such as (but not limited to) X3D, VRML, MPEG4, MPEG7, U3D, Collada, Acrobat3D and Java3D. The symposium will also focus on recent trends such as interactive 3D graphics and applications on mobile devices. Topics of interest include but are not limited to: Interactive 3D graphics for PDAs and cellular phones Innovative 3D graphics applications for Web/Multimedia in industry, science, medicine, and education User-interface paradigms and interaction methods for real-time 3D graphics & virtual environments Animated humanoids and complex reactive characters High-performance 3D graphics for distributed environments and tele-operation systems Integration and interoperation with other Web/Multimedia standards, including SVG, SMIL and Semantic Web technologies Methods for modeling and rendering complex geometry, structure and behaviors. Symposium papers submission is closed. We have had an excellent response and are looking forward to a great program. Details TBA. You can still submit contributions to the new Web3D Games workshop which will be held at Web3D 2007.