Generally the notion that goes around (and the show has done quite a bit to prove it true) is that game of thrones is different in the show than in the book. This is the reason why everyone who has read the books and who hasn’t, keep making speculations about what will happen next, because in the show things never go as planned. The showrunners keep everyone hooked to their chairs and keep throwing surprises at them.
But this time, thankfully, it’s the showrunners who themselves have said that there is nothing to be worried about since the people who have read the books will not be disappointed. David Benioff recently told EW that, “People are talking about whether the books are going to be spoiled – and it’s really not true. So much of what we’re doing diverges from the books at this point. And while there are certain key elements that will be the same, we’re not going to talk so much about that – and I don’t think George is either. People are going to be very surprised when they read the books after the show. They’re quite divergent in so many respects for the remainder of the show.”
It is also believed that though in the beginning show was supposed to keep a pace with the book but now both the shows and the books are on different paths which can submerge or not.
Weiss recently said that, “What makes the books so great is that George doesn’t make meticulous blueprints for every beat of this story and then fill in the blanks dutifully going from A to B to C, fleshing out an outline. At a certain point, we realized we were going to outpace the books and we kind of chose to see it as a great thing on both sides – there’s this amazing world George has created and now there are two different versions, and there’s no reason we can see why you can’t be thrilled and surprised and dismayed by both of these different versions of this world.”
Mixed signals, but for season 6, book readers will have an advantage over the non-readers