Leopard: Broadcasting Apps Over iChat
iChat theater was first described when Apple first released details of Leopard last year:
Why wait for a darkened room and a projector to present vacation photos or Keynote slides? With Leopard, you can do it all remotely, from the comfort of iChat. Use new iChat Theater to present photos from iPhoto, slides from Keynote, or content from any iChat-enabled application with any iChat or AIM buddy. And do it in style full-screen, accompanied by a video feed of you playing host. iChats virtual presentation room makes a big impact.
The Instant Message framework opens this functionality to any Leopard application. According to the preview document "your application can present a slide show, a video feed, or even 3D graphics, complete with sound, to one or more conference participants".
More details about Leopard are expected at WWDC 2007 which takes place between June 11-15, 2007.