I didn't had enough time to completely dig through all the information towards Australipithecus sediba, but I intend to do so tomorrow. Until then, why not heare some words about Australopithecus sediba by some people who are far more competent then I am?
For example, you can read/hear an Interview with Lee Berger on the Science Podcast: Right here
Or you can read/hear an Interview with Lee Berger and Bernard Wood at NPR: Over there