but TVGuide.com says it's official. All the original stars...Sarah Jessica Parker, Kristin Davis, Cynthia Nixon and Kim Catrall have all signed on for the film. They'll apparently start filming in September but there's no word yet on a release date. Millions of viewers tuned in for last weekend's "Concert for Diana." Nearly nine million people reportedly watched the special coverage on NBC Sunday night. Matt Lauer of the "Today Show" hosted the special...which featured highlights from the ...