George RR Martin says he's three quarters through The Winds of Winter

George RR Martin claimed he's three quarters through The Winds of Winter"I think it's going to be a very big book. The biggest books so far were the third volume, Storm of Swords, and the fifth volume, Dance with Dragons. Those were both about 1,500 pages. This one's gonna be bigger than either of that, and I think I'm about three quarters of the way done. I'm done with some of the characters. The characters all interweave, so I've actually finished with a couple of the characters, I've got their whole story, but not others. So I have to finish all that weaving. But it's still going to take me a while."The Late Show With Stephen Colbert, CBS