"Killing innocent people is unfortunately the price of immortality. Besides, in the eyes of a vampire, how do you define innocent? You'll have to kill people, that's for sure... but how do you decide who? The information you gather, the things that you see, and the relationships your nurture will all define your decisions. But you will have to feed. You cannot escape that you are a vampire."
See what I mean?
By using the Spanish Flu epidemic as a backdrop, the studio says its able to tell the gothic horror story that no other setting could really provide thanks to the sociopolitical climate at the time (grimy, sooty, post-war, England where superstition runs rampant). The team's proven its mettle at crafting excellently-realized game worlds before (Remember Me), so I'm not doubting its prowess in that regard.
Aside from the concept art, there isn't any other type of media available for the game just yet. But given the timing and this news' point of origin, it's a safe bet that the upcoming PlayStation Experience and The Game Awards in the next few days could change that. Just think: Dontnod could make the first game set near early-20th-century England that isn't an absolute bore to play.