Ustream viewing meets Android-based devices | Webware - CNET
According to Ustream, the app, dubbbed Android Viewer, allows users to watch any show on the site over Wi-Fi or 3G. The app works with Android software versions 1.5 and up. It also includes a chat function, allowing users to communicate with others who are also watching the show.

Very little of this information is new, but this leak confirms what the rumors have been saying.