(CNN) Sen. Kamala Harris is set to release a new book about her life and her prescriptions for the country, the latest in a series of steps that signal a possible 2020 presidential run.

The California Democrat's book, titled "The Truths We Hold: An American Journey," is scheduled to be published by Penguin Press on January 9. That's a little more than a year from the Iowa caucuses and within the time window that presidential candidates have historically launched their campaigns.

Announcing the book Tuesday, Penguin said it is "about the core truths that unite us, and the long struggle to discern what those truths are and how best to act upon them, in her own life and across the life of our country."

It's the second book by Harris. The first, "Smart on Crime," was published in 2009 -- the year before she was elected California attorney general. Harris won her Senate seat in 2016.

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