Martin told me at the time he had intended to write a trilogy, that's what he pitched to Bantam, but realized that he would need four books instead of three. If I write more than four, he said, you have my permission to shoot me.
I supposed that would be doable -- there are already four books published in the series, with three more on the drawing board.
At least.
I don't want to shoot him; indeed, I want him to live long enough to finish the series, just as I did Roger Zelazny when he was plugging along on the Amber novels. Roger had the grace to finish those before he passed away -- too young -- but at least he wrapped them up.
George is looking a little long in the tooth, and it's been what? five years since the most recent novel?
Stay alive, George, stay alive.