Life Line Live, from USA Today, just reported that Anna Paquin (True Blood) and Kristen Bell (Veronica Mars) could do cameos in “Scream 4″.

Expect the usual celeb cameos, including Anna Paquin and Kristen Bell, in the newest installment of the Scream horror film franchise, reports Cindy Clark. Production has started on Scream 4, which will be filmed in and around Ann Arbor, Michigan. Fans of the franchise will recognize original cast members Neve Campbell, Courteney Cox and David Arquette, who are set to reprise their roles as Sydney Prescott, Gale Riley and Dewey Riley.

But, unfortunately, it seems to be only a rumour since it stated that “Production has started on Scream 4, which will be filmed…”

Edit: EW has just confirmed, trough Dimension Films, that Anna and Kristen has been joined the Scream 4 cast.
This, of course, won’t be confirmed, but I think they will be “doing the Drew Barrymore“, to be killed in the first 10 minutes of the movie.