A DANCE WITH DRAGONS, the fifth book in George R. R. Martin's A Song of Ice and Fire series, has not been published yet. GRRM hopes to have the book ready for a 2008 release and the Official Website promises to apprise us of any developments.

For the time being, here's a description of ADWD, courtesy Bantam Dell:

In the aftermath of a colossal battle, the future of the Seven Kingdoms hangs in the balance once again-beset by newly emerging threats from every direction. In the east, Daenerys Targaryen, the last scion of House Targaryen, rules with her three dragons as queen of a city built on dust and death. But Daenerys has three times three thousand enemies, and many have set out to find her. Yet, as they gather, one young man embarks upon his own quest for the queen, with an entirely different goal in mind.

To the north lies the mammoth wall of ice and stone-a structure only as strong as those guarding it. There, Jon Snow, 998th Lord Commander of the Night's Watch, will face his greatest challenge yet. For he has powerful foes, not only within the Watch, but also beyond, in the land of the creatures of ice.

And from all corners, bitter conflicts soon re-ignite, intimate betrayals are perpetrated, and a grand cast of outlaws and priests, soldiers and skinchangers, nobles and slaves, will face seemingly insurmountable obstacles. Some will fail, others will grow in the strength of darkness. But in a time of rising restlessness, the tides of destiny and politics will lead inevitably to the greatest dance of all...