The issue is that adaptively its morphology doesn’t seem to be different from A. africanus, which would argue against the generic distinction. But if its later ancestors become H. habilis and nothing else, then I suppose this would make it a “chronospecies” of H. habilis. So maybe we should call this thing H. habilis? I think most people would argue with this simply on the brain size issue. And the brain is way smaller than any proclaimed Homo specimen.
Taxonomically, this will be a tough call.
Berger L, de Ruiter DJ, Churchill SE, Schmid P, Carlson KJ, Dirks PHGM, and Kibii JM. 2010. Australopithecus sediba: A New Species of Homo-like Australopith from South Africa. Science 328: 195 – 204
Moss ML and Young R. 1960. A functional approach to craniology. American Journal of Physical Anthropology 18: 281 – 292