John Cena is reportedly still tabbed for WWE SummerSlam.
Cena has finished filming "The Peacemaker" but signed on for "Argylle," which is set to begin filming in Europe in August. The exact start date for filming or Cena's filming schedule is unknown.
It is also unknown when Cena will return to WWE television. He has not been seen on WWE TV since losing to Bray Wyatt in the Firefly Fun House match at WrestleMania 36.
Cena has been adamant in recent interviews that we will wrestle again for WWE, but hasn't said when he will return or who he'll wrestle. Reigns has mentioned Cena in various interviews, telling him to stay in Hollywood.
WWE SummerSlam 2021 is scheduled for August 21 in Las Vegas. You can keep up with the card by utilizing Fightful's events section.