B-D gives a few facts regarding Scream 4...
Fact #1: Kevin Williamson (writer of two of the SCREAM films (character credit on third)) is going to start writing a draft, although it may or may not become the shooting script (which is typical).
Fact #2: Wes Craven may or may not direct, but there is a very good possibility that he will return.
Fact #3: They are making financial offers to David Arquette, Courtney Cox Arquette and Neve Campbell to play cameos.
Fact #4: This will be a younger version of the SCREAM movies.