Backwards compatible streaming?

Does anyone know if game streaming will ever be able to be used for 360 or classic xbox games? Its still in preview mode right now but when its finished will backwards compatible titles become playable? Im sure theres no huge demand for it but it would be
nice to have access to my entire library on the go...also what about showing the controller battery life in the guide while streaming?

Gonna put this as a discussion kuz im interested in wat others have to say on the subject(s) more than i want an answer

:)