The enhanced editions offer interactive maps, author notes from Martin, glossaries, family trees, and illustrations that "add to the adventure, whether you're new to the books or speak fluent Dothraki." For fans still waiting for the sixth book in the series, The Winds of Winter, each enhanced edition comes with an excerpt from the upcoming novel that was previously published on Martin's website.
“We’re now entering a new period in the history of publishing,” said Martin, announcing the new edition. “The digital book gives readers the ability to experience all this rich secondary material that had not been possible before. These enhanced editions, available only on iBooks, include sigils and family trees and glossaries. Anything that confuses you, anything you want to know more about, it’s right there at your fingertips. It’s an amazing next step in the world of books.”In a video on the iBooks page for the new collection, Martin calls his partnership with Apple "an amazing next step in the world of books," thanks to the interactivity infused in each edition that can help explain the sometimes overwhelming nature of his novels. Fans interested can purchase A Game of Thrones for $8.99 today [Direct Link], and pre-order the other four books for $11.99 each.