Who will be in the opening scene for 'Scream 4'?

I've heard several rumors about who will be in this scene, such as: Anna Paquin and Kristen Bell, Aimee Teegarden and Britt Robertson, and Lucy Hale and Shenae Grimes. I know all of these actresses are in the movie, i just didn't know which two characters are in the opening. :)