This looks pretty interesting:
Forthcoming! The Most Important Thing Illuminated (digital edition) will be available at Amazon, iTunes, and wherever e-books are sold!...Now, Columbia Business School Publishing is proud to announce an innovative digital edition that allows you to read Marks’s words alongside comments, insights and counterpoints from four other renowned investors and investment educators: Christopher Davis, Joel Greenblatt, Paul Johnson, and Seth Klarman. See what these investors think of such concepts as "second-level thinking," the price/value relationship, patient opportunism, and defensive investing. There are also annotations from Howard Marks himself, highlighting some of the themes that run throughout the book, along with a previously unpublished bonus chapter on the importance of reasonable expectations. This edition features a foreword from Bruce Greenwald.
Link to FULL DESCRIPTION.