I have no way of checking this story - only Steve Jobs's family and estate attorneys know the facts for sure - but it seems reasonable to assume that the authors have done some pretty thorough research.
Given his efforts to keep his personal life private, we won’t ever know exactly how his estate plan allocates his wealth — unless, of course, he wanted the world to know.
We do know that it involved a network of at least two trusts. California records show that he and his wife, Laurene, moved their Palo Alto house and other real estate into two trusts when his liver was failing in early 2009...Completely under the radar, SEC filings reveal that Jobs was also busy moving the rest of his material wealth — 5.5 million shares of Apple stock and 138 million Disney shares, a memento of his other baby, the animation company Pixar — out of his estate and into a trust.
Since he basically earned nothing from either Apple or Disney since then, it’s possible that he died with no real assets in his name...Given the elegance of the products he designed, it is not surprising, I suppose, that his estate plan was so clean and effective.