I have heard that it will not be until next year at the earliest. I heard the cutiest story about Jo Rowling. Evidently she was touring a children's cancer ward in London and a young cancer patient asked if she would tell him the name of the next book. Since the name of Book four, Goblet of Fire, was kept under strict secrecy, the young patient did not expect an answer. Ms. Rowling decided to tell the young man that the next book would be called "Order of the Phoenix." You really have to admire Ms. Rowling both for her creativity and in this case her compassion.