One of the most talked-about books of the summer, Harper Lee's Go Set a Watchman, has an official cover. HarperCollins unveiled the jacket of the book, with president and publisher of general books Michael Morrison noting that the design "draws on the style of the decade the book was written, but with a modern twist."

Morrison added that the cover, which features a train forging ahead from the distance, touches literally and figuratively on the book's content. "Go Set a Watchman begins with Scout's train ride home," he said, "but more profoundly, it is about the journey Harper Lee's beloved characters have taken in the subsequent 20 years of their lives."

The book, which is Lee's second, has been topping the pre-oder charts. It is also continuing to be a flash point for controversy. Questions about the nature of the publication--and whether Lee, a famously reclusive figure, is lucid enough to fully endorse the deal--have swirled since it was announced in February. Those questions have led to an inquiry into the 88-year-old author's condition by the state of Alabama. HC has firmly maintained that Lee is fully behind the release.

Watchman is set for a July 14 publication and has announced first printing of 2 million.