It looks a lot like Dishonored, visually, even if in the gameplay they're trying to take it a different direction

“We played Dishonored. We had fun playing it, but at the same time, when we were playing it we realised it was a very different type of game, even though the inspiration and the source is the same. In terms of game mechanics, they have a very strong arcade feeling over their magics. They’re very magically inspired – our direction is more mystical, more immersive, more realistic feel.…Thief isn’t about revenge. It’s not about killing people. It’s about stealing, and being places you shouldn’t be. That’s what made Thief stand out in the old days. It was about everything else but killing.”