When Will The Next Book From "A Song Of Ice And Fire" Be Released?

George R.R. Martin says that Book VI, The Winds Of Winter, will come out in Spring of 2016. It will come out just before season 6 of the HBO adaptation, "Game Of Thrones", which will air in April of 2016.

He told Entertainment Weekly:

I wish it was out now. Maybe I’m being overly optimistic about how quickly I can finish. But I canceled two convention appearances, I’m turning down a lot more interviews—anything I can do to clear my decks and get this done.

On having started the book after releasing Book V,  A Dance With Dragons, in 2011:

I was red hot on the book and I put it aside for six months. I was so into it. I was pushing so hard that I was writing very well. I should have just gone on from there, because I was so into it and it was moving so fast then. But I didn’t because I had to switch gears into the editing phase and then the book tour. The iron does cool off, for me especially.

Source: Entertainment Weekly