thanks to bgemytha presentation by Michael Ancel and Jordan Mechner about games narrative and their inspirations. it was invitation only apparently. (cam footage below)we can see game's logo for the first time?! as well.the team flew to India to get the feel of a very populated city and make a believable world . the world in bge2 is a mix of modern and old he says.with their engine they claim they can build huge, fully explorable cities. He hopes to put a lot of details in the world to create a believable world and hopes to create a link between the player and the world, so that if a violent scene happens in the world for example, the player feels touched by it.you can see some in engine still scenes, starts at around 3min in. they show the old leaked footage from 2008 in the end as well.and concept arts here.