Depends on wether or nor George R.R. Martin has actually a plan for his books series.
I’d exclude filmalizations (is that a word? it should be) anyway, though, since they get their main plot not from the shows’ writers.
Though I guess they could create on of their own. I have this ongoing fantasy of inhertiting a couple of hundred millions, buy Perry Rhodan TV rights and make it he first 400 issues into a coherent animated series.
(Would have to be animated - CGI would wreck the budget and how do you keep the main protagonists at middle age, unless you can pull a Doctor.)
