As Random House, Inc. prepares a print run of 5 million copies for Dan Brown's "The Lost Symbol"--the largest first run in company history--they unveiled the highly-anticipated cover to this highly-anticipated follow-up to "The Da Vinci Code."

Since "Code" sold 81 million copies, it doesn't seem like such a bad bet. Find out more about the book and its elaborate web extras at Brown's website.

Here's more from the release: "To satisfy Dan Brown fans, Doubleday has launched a summer-long campaign of code-breaking and problem-solving hosted on Twitter and Facebook. Featuring an enigmatic array of codes, cryptic trivia, puzzles, secret history, maps, aphorisms, ciphers and arcane knowledge, daily posts will challenge, intrigue, educate and entertain."