The Screen Actors Guild is reported to begin talks with the AMPTP as soon as their information-gathering is complete on March 31.
The SAG-AFTRA contract on feature film and primetime TV expires June 30, 2008, and according to Variety.com, "Studio worries about an actors strike have resulted in execs refusing to schedule production start dates on films that can't be completed by that date."
For SAG President, Alan Rosenberg and the Screen Actors Guild's National Executive Director, Doug Allen's letter to SAG members, click here.
Source: TVGuide.com, Variety.com, SAG.com.