The feeling backstage was that Undertaker needed to take some time off to heal a number of nagging injuries, hence the storyline writing him out of WWE programming. There doesn’t appear to be an exact time frame on his return, but it isn’t expected to be too long. They did a retirement storyline this time around because Vince McMahon didn’t want to go with yet another injury angle. Undertaker has been written out of TV a few times in recent years due to real injuries and McMahon didn’t want to give the perception that his body is breaking down. When Undertaker returns he is expected to resume his long-term program with Edge.
Triple H is scheduled to appear in a documentary on the lead singer of Motorhead, Lemmy. It will be called Lemmy: The Movie.