An instaclasher promised that he saw this leak in the appstore and updated that he checked out again but he the leak was gone. Not only him but also a lot of other people.
I don't know what kind of a bug would update the description of the game in the appstore before its time. I am not sure if clash did that on purpose.
Tomorrow we should see the next sneak peek and we will probably know if the leak is correct or not. I remember a post for supersteve (supercell staff) talking about the clan wars opt in/out feature an how it's difficult to implement in the game. That's what I remember from the his topic.

