The 'Screw You' singer posted a picture of herself holding the tell-all book, titled Cheryl: My Story, on the social networking site earlier today (October 3).
An accompanying message read: "It's REALLY here !!!! #Emotional."
Teasing the book last month, Cole said that she aims to "put straight" a lot of the rumours that have surrounded her in recent times.
"I've actually got a lot of stuff to say... and it's been a cathartic experience - more than I thought," she said.
Asked if anybody like ex-husband Ashley Cole or her former X Factor boss Simon Cowell should feel nervous, Cole replied: "Only if they think they should be! If they think they should be then they probably should."
Cheryl: My Story will be released on October 11.
Cole will reportedly reunite with her Girls Aloud bandmates for a new single next month celebrating their 10th anniversary.
Watch the lyric video for Cheryl Cole's 'Screw You' below: