stop and they gave jormg stephanopolous some strange title probably in order to appease hill. why did diane sawyer step down now? reporter: i m told by abc that she was think being this for a while, that she started talking to her bosses about moving on sometime last year, and now it will take effect at the end of august, so david muir will take over the world news chair september 2nd. there is an end of an era feel to this. george steph anopolous will hav a title as chief anchor for the whole news division, special reports for example he would be the one at the anchor chair perhaps joined by david muir. it says to me the morning shows are ascendant. it s been becoming more true over time. george stephanopolous the gma morning anchor who will take the