So, we can't acquire a definite on how long the game will be at this point in time. All we know, is it will be roughly 40 hours or so long, which is pretty good, and I'm satisfied with that.
Now, what I would like to discuss, is how large will the world of Divinity Original Sin be? Is it going to be an expansive open world (if so, offering 100 hours of gameplay on its own)? Is it going to be split up into smaller instanced zones? Or is it going to be a more direct/linear map?