DatIrishFella
Band of Brothers, Thief
I am, because, quite frankly, Weiss and Benioff are pretty much on their own now, might have minor ideas from GRRM, but I think they are going to heavily their own way.
And bookreaders can't be smug no more. Since the final two seasons will probably come out before book 6 anyway. How fresh is that going to be? It's all fair game, except for deeper stuff.
Winds of Winter is expected out next year some time so I doubt they'll go on their own. They spent a week living in GRRM's home writing for season five, most likely they'll do similar this year. Also, they start filming end if July/August so the season six script is probably already finished. The answers book readers have been waiting for for four years (is that a legit way to say that? ) will be spoiled should the book drop anythim after April 2016.