A Dance with Dragons is the fifth of seven planned novels in the epic fantasy series A Song of Ice and Fire by American author George R. R. Martin. As of December 5th, 2006, Martin states that the book will not be completed by the end of 2006, as previously announced, and Martin will no longer announce dates when he hopes to deliver the book to his publishers.
http://en.wikipedia.org/wiki/A_Dance_with_Dragons