Brochure for the Movie was released
http://www.project-index.net/content...x00090000.html for 315 yens (2.5eur) with amazing 64 pages!!
It's called: A Certain Magical Index Movie: Underlay Story.
It contains some new SS (Short Story) by Kamachi on the back.
More info on:
http://kodoku21.blog83.fc2.com/blog-entry-2766.html