The top matches for WWE SummerSlam are locked in but, at this point, there is nothing to indicate that Bray Wyatt will be part of the show.
Wyatt has not been mentioned on WWE TV since he lost to Bray Wyatt at WrestleMania 37. They also made the decision to have Alexa Bliss turn on Wyatt and continue her dark version of her character.
PWInsider noted this week that Wyatt is not out because of a creative issue so this is not a case of creative not having anything for him or Vince McMahon wanting to save him for the return of fans to live events.
Ringside News is reporting that Wyatt has been out of action because of a medical issue. There are no other details available but he could be on his way back soon because he is advertised for a live event on August 9. If he is back by that date then it means that there is enough time to get him on the SummerSlam card.
Aside from a rare tweet where he said that he misses the fans, Wyatt has not said much about his absence from WWE shows.
I miss you guys too. Believe me
— Bray Wyatt (@WWEBrayWyatt) July 15, 2021