As many of you should know by now, Scream 4 has constantly been picking up steam over the past few months, and it’s not slowing down now.

After securing main returning stars like Neve Campbell, David Arquette, and Courteney Cox Arquette, as well as original screenwriter Kevin Williamson and director Wes Craven, it was time to find and acquire some fresh blood.

This began with the casting of Emma Roberts as one of the female heroines (and likely the lead female if this does turn into a second trilogy). Right around the time that Roberts was cast, Heroes star Hayden Panettiere and Rory Culkin were rumored to be up for parts as well…eventually progressing to confirmations.

Now, according to Entertainment Weekly and a source of theirs, two more well-known names are on-board with Scream 4. The source states that Gilmore Girls and Bad Santa actress Lauren Graham is “very close” to joining, and the report indicates that Anthony Anderson is already in. Anderson is probably best known from his current run on Law & Order, but before that he was more of a comedic actor in movies like Transformers and Exit Wounds among many others, including (ironically) Scary Movie 3 and Scary Movie 4.

Scream 4 is currently slated for an April 15, 2011 release date.