Game of Thrones will end at the same point in the story that the books end. However the story line will be revealed on TV before the final book comes out, the show’s co-creators revealed in a talk at Oxford Union, which we have embedded above.
Here is what the show’s co-creator David Benioff said during the talk.
Luckily, we’ve been talking about this with George for a long time, ever since we saw this could happen, and we know where things are heading. And so we’ll eventually, basically, meet up at pretty much the same place where George is going; there might be a few deviations along the route, but we’re heading towards the same destination. I kind of wish that there were some things we didn’t have to spoil, but we’re kind of stuck between a rock and a hard place. The show must go on. . .and that’s what we’re going to do.
(Via Vanity Fair).