Speaking of those two more books, Martin is currently working on the penultimate installment on the "ASoIaF" saga. "A Dance with Dragons," book 5, came out in 2011, and fans had to wait six years for its release. Martin said he hopes that book 6, "The Winds of Winter," doesn't take nearly as long.
"I'm working on it. It's going to be a monster. It's going to take a real long time," he said. "I'm not making any predictions when it's going to be done, but I hope it will be faster than the last two. I'm certainly trying to get it done faster than the last two."
Martin has been reading chapters from the incomplete book at fan conventions and even posted one to his website, and said he expects those chapters to make it into the final "Winds of Winter" cut. "I never say definitely, but those are pretty close to final chapters. Unless something really radical happens -- and I'm not saying that won't happen, I do sometimes make changes -- I think those chapters will be in the final book," he said.
And fans don't need to keep stressing out about Martin potentially stretching "ASoIaF" into eight books instead of his planned seven. Zap2it asked Martin whether he thinks he'll need to add an eighth book to the series like he's said in the past, and he said he doesn't plan to.
"No, seven books. I'm still aiming for seven books, but once again, I don't write anything in blood," he said. "I really regard it as one story: beginning, middle, end. If it takes seven books, if it takes eight books, if it takes 103 books, I've got to tell the whole story. I'm not going to truncate it just because I only said so many books. It's a question of to reach the end and to wrap the story up the way I want to wrap it up."