"My whole life has been getting me ready for this," Jenner says in what may just be the ultimate tease for the interview, taped back in February.
During the two-hour 20/20 special that will air on Friday, April 24 at 9 p.m. ET/PT, Sawyer will speak to the former Olympian in what ABC calls a "far-ranging, exclusive" that promises to show Jenner's "journey," "decisions" and "future."
This is the first time the 65-year-old Keeping Up With the Kardashians star has spoken publicly since reports and speculation of a gender transition.
Jenner has had an eventful few months following his September 2014 divorce after 24 years of marriage from Kris Jenner. More recently in February, Jenner was involved in a fatal car accident on the PCH. It is possible that the family of the woman who died may still file a wrongful death lawsuit against Jenner.
ABC has been tight-lipped about the interview, and these promos are just whetting appetites.
Check out the video below to see more on the first promo from the big interview.