The gospel star's new memoir The Whitney I Knew will hit shelves on July 13 and feature never-before-seen photographs of Houston.
Winans said that The Whitney I Knew is to be a cautionary tale for readers and will divulge "heart-breaking accounts that led to her ultimate defeat".
BeBe and wife CeCe Winans led a section of Whitney's funeral service at the New Hope Baptist Church in New Jersey in February.
The announcement comes just one week after Whitney's mother Cissy Houston confirmed that she is writing her own tell-all biography.
Houston was found dead at the age of 48 in her Los Angeles hotel room on February 11.
Watch Whitney Houston perform 'I Will Always Love You' below: