The Nielson Movie View seems credible and folks are reporting that they are having success signing up for the screening. Here is the promotional image that appeared on the invitation. It appears to have all the right elements and the various characters match up with some of the images that have already emerged. If this turns out to be a fake, then someone was very adept at taking photos of known cast members and weaving them into this image.
Note: Slash Films and other movie sites are now posting the Ronin Poster seen below.
