Don't Expect Game of Thrones Prequel Until 2021

Unable to play video. While it's only been a matter of days since Game of Thrones' final episode aired, fans are curious to find out exactly where the hugely-popular franchise goes next. According to new comments from HBO programming president Casey Bloys, that might involve a bit of a wait. The exec recently spoke to Deadline about Thrones' upcoming prequel series, and hinted that he's not quite sure exactly how fast the turnaround will be. "I don’t know." "I doubt it, I don’t think so.