mcnuss -
In the graveyard scene in the GoF film, the name and birth date for Voldemort's father were incorrect. An Entertainment Weekly photo spread about the movie showed the headstone reading "Tom Marvolo Riddle" with birth & death dates. In Half-Blood Prince, we learn that "Marvolo" is Voldemort's maternal grandfather's name. The dates on the headstone were always wrong - I forget what they used to be, but it would have made Tom Riddle ten or so when Voldemort was born.
Anyway - the point is, Warner Bros is going back and digitally fixing the headstone, thanks to the hue and cry of many Potter fans.
Lisa Loves Pooh - I have no idea what that email means! But you are right - the Potter films cast only British actors. Famous American actors have begged for even a walk-on, to no avail.
Either way - no film dates are scheduled, so whatever the email is soliciting, it's got nothing to do with the movies. Also - JK Rowling doesn't participate in the casting of the films - she did request Robbie Coltrane as Hagrid but that was it.
Okay, I've now revealed my obsession with Harry Potter. I could tell you that I only know this stuff because of my daughter, but the truth is - it's me! I'm the Harry Potterphile! I feel ashamed, yet cleansed by this revelation.