This Time Next Year will follow the emotional journeys of ordinary people as they embark on challenging missions to change their lives, over the course of one year.
A transformation will be revealed in a single episode, as participants enter one door and instantly emerge from another in a "time-travel" type of format, revealing a brand new version of themselves.
Show participants will undergo reconstructive surgeries and heartwarming reunions as well as attempt to conquer infertility and lose weight.
"No hurdle is too big for the brave individuals who have chosen to take control of their lives on This Time Next Year," according to the network. "Only after they reappear will viewers learn how, and if, they have achieved their goals."
Additional details, including the premiere date for This Time Next Year, will be revealed at a later date.
As part of Lifetime's announcement of new projects, Yolanda Hadid will also host a new reality competition show, Model Moms, in which the former The Real Housewives of Beverly Hills star will coach aspiring models and their momagers on how to become successful in the industry.
Lifetime hired Deeley, the longtime So You Think You Can Dance host and five-time Emmy nominee, and Hadid, who is the mother of "it-girls" Gigi Hadid and Bella Hadid, for the gig to support the network's new "possibility is power" theme for women.
Despite her new position, Deeley will still be hosting the upcoming fourteenth season of So You Think You Can Dance this summer.
This Time Next Yearis being produced by Twofour America and executive produced by Bernie Schaeffer, Laurie Girion, Melanie Leach, Andrew Mackenzie, Mariana Flynn, Mary Donahue and David Hillman.