Shane McMahon announced on Twitter that WWE Hall of Famer Edge would be appearing on next Tuesday’s episode of SmackDown Live, which will be the 900th episode of the TV show.
https://twitter.com/shanemcmahon/status/796014530614726657
As noted, WWE has already announced that The Undertaker would also be appearing on the show, which is being held in Wilkes-Barre, PA at the Mohegan Sun Arena.