about a week ago, we did hear that Julia Jones was playing Leah. She even stated on her twitter that she got the part. But now, there's other rumors stirring around. The other actress that was the 粉丝 wanted to have the role of Leah is 说 to have been meeting with Summit regarding the role of Leah.
I did some research of my own and checked imdb. And, as much as that site isn't always reliable, they already have Huston as Royce King II. So, I am still questioning whether Julia has gotten the part.
So, I don't know if it's 安全 to say that Julia is Leah just yet.