The Age. The topic was previously on indefinite hold following Attorney General Michael Atkinson's unilateral decision not to let the paper become public.
During a recent meeting of the Standing Committee of Attorneys-General, the group, including Atkinson, agreed to finalize the discussion paper and release it by the end of the year (it'll be viewable globally on these here internets). Atkinson did not reveal at the meeting why he changed his mind. An R18+ rating means that games won't be banned for being inappropriate for a 15-year-old.