I don't think that's what's happening here. Each of the TVML documents would be stored locally and called by a locally stored TVJS file, which is invoked by yo

I don't think that's what's happening here. Each of the TVML documents would be stored locally and called by a locally stored TVJS file, which is invoked by your binary. In other words, all of the program logic and display elements are on the Apple TV - only the data that's being retrieved and displayed would be stored server-side - which is no different from any iPhone app that displays server based content today.