Finally, we'll get the final season of Game of Thrones. HBO released this teaser trailer along with a return date of April 14th. The new (and last) season will be 6 episodes. Each episode will be about 90 minutes long.
The teaser features Arya Stark, Sansa Stark, and Jon Snow facing their own statues in the underground caverns of Winterfell. This will not be the end of the Game of Thrones universe on HBO. They've greenlit several new series, with the first one being a prequel that takes place thousands of years before the current show. That show will star Naomi Watts.