Judging from the poster alone, my gut instinct is that it is not a movie poster. Can't say I've seen one in recent years that just says "Disney," if anything I would expect it to have Walt Disney Pictures. Now, the source said it came from Burbank, if it was at Team Disney, it could be anything, but if it is at the Studios, there is a higher chance it is for some sort of film production.
Can't be release of a film, since March 10 is a Tuesday. Tuesday is normally the day for DVD releases (I don't know why, but I've been told that it is), but that doesn't really help, since I can't figure out what 23 would have to do with a DVD release.
Maybe it just means they're adding Dr. Pepper to the vending machines that day, since Dr. Pepper's ad campaign is about having 23 flavors. :lol: