The actual sit-down already happened in February, but earlier this week the air date was released. The 20/20 special will be broadcast on April 24 at 9 p.m. ET.
Sawyer will speak to the Olympic gold medalist in a "far-ranging, exclusive" simply titled "Bruce Jenner -- The Interview," according to an ABC release.
Speculation that Jenner, 65, has reportedly begun a gender transition that has been covered heavily by the media, and the biggest question about the interview is whether or not that will be the main topic of discussion.
"I feel that Bruce must have led a conflicted life feeling this way for so long, and how he was able to cope with that and manage that," Katie Couric told ET.
"As long as he is comfortable emotionally, then the physical changes can follow," Dr. Mehmet Oz added.
First reports that Jenner would sit down with Sawyer pre-dated the fatal car accident in which Jenner was involved on Feb. 7, so it is unclear whether that incident will be among the topics discussed. Jenner was not charged with any crime and cooperated with authorities following the accident, but it is possible that family of the woman who died may still file a wrongful death lawsuit against Jenner.