Mrs Trump has been the subject of other books, including one by Stephanie Winston Wolkoff, a former adviser, but she has never told her own story at length before.
The former first lady “invites readers into her world, offering an intimate portrait of a woman who has lived an extraordinary life”, the announcement said. “Melania includes personal stories and family photos she has never before shared with the public.”
A spokesman did not confirm whether she worked with a co-author.
Trump’s third wife has been an enigmatic figure since her husband announced he was running in the 2016 election. She has sought to maintain her privacy even as she served as first lady, focusing on raising their son, Barron, and promoting her “Be Best” initiative to support the “social, emotional, and physical health of children”.
While she appeared at her husband’s campaign launch event for 2024 and attended the closing night of last week’s Republican national convention, she has otherwise stayed off the campaign trail.
Her decision not to deliver a speech at this year’s convention marked a departure from tradition for candidates’ wives and from the 2016 and 2020 Republican gatherings.
She also never appeared at her husband’s hush money trial in New York in May or put out a statement when he was found guilty.
“Everything [with Melania] is very strategically planned,” Ms Wolkoff a told CNN at the time.
“She is not going to put herself in a position where she is giving anyone the opportunity to say anything negative about her,” she added.
Mrs Trump did, however, put out a lengthy statement after her husband was shot in Pennsylvania recently.
She called the gunman a “monster” who nearly destroyed her family.
“When I watched that violent bullet strike my husband, Donald, I realised my life, and [son] Barron’s life, were on the brink of devastating change,” she wrote.
Mrs Trump went on to call for people to show “love, compassion, kindness and empathy” and remember there are people behind politics.