There is a new Q&A with GRRM at smartertravel.com. Here's a teaser regarding The Winds of Winter:
There were a lot of cliffhangers at the end of A Dance with Dragons. Those will be resolved very early. I'm going to open with the two big battles that I was building up to, the battle in the ice and the battle at Meereen—the battle of Slaver's Bay. And then take it from there.
Follow this link to read the full interview.