Just now, MrMenthe said:He's, at it seems, a Asmodee France employee. The leak wasn't supposed to happen and could hurt the potential for marketing event in France.
Why take the risk anyway ? Even if it's a fake (which I don't think it is), where is the harm in taking it down ?
That's just my humble opinion.
If FFG/Asmodee doesn't want something to be seen on the internet in the year 2017, don't bring it to a public event. In reading the French thread, it appears the guy running the demo had no problem with people taking pictures of things. If they didn't want people to take pictures, don't demo the game.