HBO has released a new Game of Thrones Season 8 trailer, offering a more extensive look at footage from the final season of the most popular series in the pay cable network's history. There is plenty to speculate on, but what we do know for certain is that Season 8 will consist of a mere 6 episodes. However, they will all be extended in length, so prepare for more 90-minute episodes. Directors for these final episodes are: Miguel Sapochnik, who directed the iconic "Hardhome" and "Battle of the Bastards" episodes as well as "The Winds of Winter"; David …