There’s a Shroud of the Avatar novel in the works, and it’s being credited to both developer Richard Garriott and author Tracy Hickman. Publisher Macmillan’s website lists the book’s title as The Sword of Midras, A Shroud of the Avatar Novel. The site also says that the book is the first volume of the Blade of the Avatar trilogy.
Hickman is a bestselling author of popular fantasy novels including the Deathgate Cycle and various excursions into the Dragonlance universe.