During a San Diego Comic Con panel, we got a (sort of) update on George R.R. Martin's Winds of Winter, with the author confirming that he's still working on the book and doesn't intend to cameo in Published May 1, 2022. George R.R. Martin takes to his "not a blog" to give yet another update on The Winds of Winter, saying the sixth book in ASOIAF will be the biggest. Game of Thrones author George R.R. Martin says The Winds of Winter could be the longest book in A Song of Ice and Fire (ASOIAF) thus far. jbg17.