The 76-year-old widow of the late former Beatle has revealed she will put pen to paper over the next few years and write an autobiography about her eventful life with John.
She said: "I would love to do it. I just have to find the time.
"It will be my next book, which will be written in the next five years."
Yoko - who was blamed by many Beatles' fans for causing the legendary band to split - previously claimed she wouldn't release a book for fear of hurting the families of people close to the group, including John's ex-wife Cynthia Lennon.
John's marriage to Cynthia broke down as his fame grew and shortly after he met artist and musician Yoko.
They couple - who had a son Julian together - divorced in 1968, one year before his marriage to Yoko, the mother of his son Sean.
Yoko is looking forward to revealing all about their affair and dispel the myths surround The Beatles' break up.
A Beatles expert said: "Unlike Cynthia, Yoko has never really told her side of the Beatles story and the truth about her affair and subsequent marriage to John, so the book will be much awaited.
"She's always maintained she never broke up The Beatles, so this will be her chance to put the record straight."
John died in 1980, after being shot by deranged fan Mark Chapman outside his apartment building in New York.