Along with the stills, we also have two new pieces of information.
1. Oracle's role in the game brings out Batman's "human side."
2.
[POTENTIAL SPOILER] In a cinematic, Arkham Knight knocks Batman to the ground, points a gun to his head, and pulls the trigger as the screen turns black. Though it is highly unlikely that Batman is actually dead, it does give out information on what must be a key scene in the story.
Batman: Arkham Knight is an upcoming action-adventure video game developed by Rocksteady Studios and released by Warner Bros. Interactive Entertainment for the PlayStation 4 and Xbox One video game consoles, and Microsoft Windows. Based on the DC Comics superhero Batman, it is the successor to the 2013 video game Batman: Arkham Origins, and the fourth main game in the Batman: Arkham series. Kevin Conroy will once again voice Batman. Batman: Arkham Knight is scheduled to be released worldwide on October 14, 2014.
The game's main storyline is set one year after that of 2011's Batman: Arkham City and follows Batman, at the peak of his ability, as he confronts the supervillain Scarecrow, who has returned to Gotham City to unite Batman's enemies in a plot to finally kill the Dark Knight.