In addition to the capacity to stream DVDs, which was featured in the previous beta of 4.1, WebGuide boasts two new features — a Media Center add-in and the "WebGuide Prism" multi-system interface.
The new Media Center add-in connects to a WebGuide server and enables users to stream recorded TV, videos and DVDs within the Media Center interface - including the Xbox360 extender - at qualities up to 720p via WebGuide's integrated real-time transcoder. If you have multiple Media Center systems, no problem: in Media Center you can designate each one as a separate add-in. Or, better yet, use the new "WebGuide Prism" technology to link them all into an single aggregated interface.
"WebGuide Prism" is a new component that allows users to interconnect multiple machines that are running WebGuide. These connections aggregate the media from multiple systems into a single interface. Each media item (recorded TV, video or photo) that is available on another machine will show alongside the local content, but will be flagged with a customizable icon that identifies the source machine. You can play or the view media from other machines in the same way you would media from your local machine.