'Game of Thrones' fans are eagerly awaiting two milestone events: the final season of the HBO series and the final installment of George R.R. Martin's 'A Song of Ice and Fire' novel series. Martin announced that he will definitely finish the series, regardless of when the TV series ends. According to comicbook.com, he told fans, " It won?t be tomorrow, and it won?t be next week, but you will get the end of A SONG OF ICE AND FIRE..Winter is not the only thing that is coming." The next book will be titled "Winds of Winter." 'Games of Thrones' returns to HBO in April 2019.