Bloody Disgusting has for some reason put another headline up just to confirm whos "in" so far.. below..
Hayden Panettiere, Rory Culkin and Emma Roberts have now all officially signed on to star in Scream 4, which Variety is calling a "reboot of the horror franchise." Maybe that's a clue about what the film is about? Neve Campbell, David Arquette and Courteney Cox have been locked in for months while we still await official word on Lake Bell and Ashley Greene. The original creative team is on board for the reboot, which begins shooting next month in Michigan: Wes Craven will produce and direct; Kevin Williamson is screenwriter. Iya Labunka is producing along with Craven. Dimension Films has it slated for release on April 15, 2011.
http://www.bloody-disgusting.com/news/20388