Bruce Jenner says his whole life has been getting him ready for this in new promo

ABC News has released another promo of Bruce Jenner's much talked-about interview with Diane Sawyer.

In the 15-sec clip, the 65-year-old former athlete says over shots of him walking and talking with Sawyer that his whole life has been getting him ready for this, the Us Magazine reported.

A dramatic voice-over narrates the remaining seconds, offering just hints at what's to come: "Bruce Jenner, the interview: the journey, the decisions, the future, the Diane Sawyer exclusive.