Although Bray Wyatt is yet to debut, there are rumors that plans have changed for when he will be appearing on WWE TV. Before Eric Bischoff and Paul Heyman came on board, it was revealed that Wyatt was supposed to make his debut at WWE SummerSlam. Those were the original plans for him.
They appear to have changed, although that cannot be confirmed at the moment. There is a lot of uncertainty about his debut and direction, although it is more or less sure that Wyatt will be at SummerSlam. Whether that will be his first appearance or not, remains in doubt.