Click the link for the full interview below:
http://www.arkhamverse.com/news/2014/03/reboot-interview-with-dax-ginn-arkham-knights-batsuit-and-communicator-upgrades/
Summary
-The Scarecrow did not appear in Arkham City because the developers wanted to focus on the Batman/Joker relationship.
-Scarecrow is darker and more chaotic.
-A new lighting and rendering system has been developed.
-You will be able to use the Batmobile from the start of the game.
-Gotham City is 20x the size of the Arkham Aslyum map.
-Batman's new suit is called the Batsuit Mark 8.
-The new Batsuit is what allows Batman to eject from the Batmobile.
-Batman now has a holographic communicator on his wrist which allows him to see the person he is talking to.
In the explosive finale to the Arkham series, Batman faces the ultimate threat against the city he is sworn to protect. The Scarecrow returns to unite an impressive roster of super villains, including Penguin, Two-Face and Harley Quinn, to destroy The Dark Knight forever. Batman: Arkham Knight introduces Rocksteady's uniquely designed version of the Batmobile, which is drivable for the first time in the franchise. The addition of this legendary vehicle, combined with the acclaimed gameplay of the Batman Arkham series, offers gamers the ultimate and complete Batman experience as they tear through the streets and soar across the skyline of the entirety of Gotham City. Be The Batman.