An upcoming biography on Apple co-founder Steve Jobs reveal he was offered liver by present Apple CEO Tim Cook. Titled ‘Becoming Steve Jobs: The Evolution of a Reckless Upstart into a Visionary Leader,’ the book is written by Brent Schlender and Rick Tetzeli, and is scheduled to go on sale from March 24.

“From what I’ve seen, some of the stories are pretty sensational – providing new details into the close relationship between Jobs and Cook, revealing Jobs’ secret plan to buy Yahoo!, and much more,” says Dormehl.

The new book attempts to paint a different picture of the eccentric late Apple CEO from the bestselling 2011 biography Steve Jobs by Walter Isaacson. The book draws from interviews with people who knew Jobs very well including including his family, former inner circle executives, and top people at Apple, Pixar and Disney, most notably Tim Cook, Jony Ive, Eddy Cue, Ed Catmull, John Lasseter and Robert Iger.

One of the most explosive revelations of the upcoming biography is the story of Cook offering an ailing Jobs a portion of his own liver when Apple’s visionary leader was in the need of a donor. Cook and Jobs shared the same rare blood type. But Jobs turned the offer down.