Unity is set in France during the French Revolution, but that is not the truly important news. What's important is the fact that Assassins Creed Unity will feature four-player cooperative play during the campaign. The gameplay demo showed off four players controlling different assassins in an effort to infiltrate a castle and murder some aristocrat.
The demo ended with a fancy example of Unity's graphical capability when the French villain was beheaded by the peasants.
Assassins Creed had been reaching a point of lower returns until Black Flag was released last year. I do think that the co-op in Unity looks fantastic, and I can't wait for the French Revolution setting. Hopefully, Unity fulfills the promise.