yep, and they had to split up the book into two because next season's just as crazy as this one.
I recommend reading the books while you wait, there's a lot more characters and plot points going on, but if you enjoy the show more stick with it by all means. Read the wedding though, it's a lot more brutal. Being in Cat's head when she goes insane after seeing Robb die is worth it and her last line is probably the most heartbreaking thing in the book.