The version of Assassin's Creed Unity that Ubisoft plans to ship on Xbox One and PlayStation 4 this October "can't be done" on Xbox 360 or PlayStation 3, the publisher told GameSpot this week at E3.

There's a new Assassin's Creed game every year, but Ubisoft still manages to wow us with some new feature or another when they inevitably roll out a new title at E3 each year. At the latest expo we ...