HBO has revealed the title for the fourth episode of Game of Thrones season 7. According to the website of HBO Asia, the episode will be called ‘The Spoils of War‘.
In the second episode (Stormborn), Tyrion planned to take Casterly Rock by having Unsullied assault it. And as we can see from the above clip from next episode’s trailer (The Queen’s Justice), there will be a war between Unsullied and the Lannisters in the upcoming episode. So the fourth episode could be referring to spoils of that war.
The Spoils of War will be directed by a first time Game of Thrones director Matt Shakman, who is known for his work on Fargo and It’s Always Sunny in Philadelphia. The episode will also include the following shot of Daenerys riding Drogon: