From the New York Times article by Larry Rohter:

“For two decades, the Columbia University professor Manning Marable focused on the task he considered his life’s work: redefining the legacy of Malcolm X. Last fall he completed “Malcolm X: A Life of Reinvention,” a 594-page biography described by the few scholars who have seen it as full of new and startling information and insights.

“The book is scheduled to be published on Monday, and Mr. Marable had been looking forward to leading a vigorous public discussion of his ideas. But on Friday Mr. Marable, 60, died in a hospital in New York as a result of medical problems he thought he had overcome. Officials at Viking, which is publishing the book, said he was able to look at it before he died. But as his health wavered, they were scrambling to delay interviews, including an appearance on the “Today” show in which his findings would have finally been aired.”

From the book description:

“Malcolm X will stand as the definitive work on one of the most singular forces for social change, capturing with revelatory clarity a man who constantly strove, in the great American tradition, to remake himself anew.“