The fourth book, the long-awaited A Feast for Crows, is now out. The next book, the fifth, is called A Dance with Dragons. Originally, this was supposed to have been the title of the fourth book, but it ended up being called A Feast for Crows instead.

As of yet, there is no set publication date for A Dance with Dragons. Any dates given by bookstores or even publishers are guesses and nothing else until GRRM announces on his official website that he has finished writing the book.