A Song of Ice and Fire author George R.R. Martin has said he's written 1,100 pages of next book The Winds of Winter, the same amount he'd written as of December 2022, while also revealing there are eight Game of Thrones spin-off shows being worked on.
Of his original three part series, I think we’re almost at the end of the second right?
So I’m pretty sure the “final” book would end up being split into two or three. By which time George will be a healthy 127 years of age.