The official Pokémon movie website has updated. Translations follow:

Receive a "Kids Fun Book" from Tsutaya! Available from Friday July 17th!

Collect stamps in the stamp card you can receive at Tsutaya stores all over Japan!

Each stamp can only be used once: Once you've collected your first and second stamp you'll receive Pokémon stickers, and with the third, you'll receive an original Tsutaya "Kids Fun Book"!
Both its cover and its special articles are based on "Pokémon the movie XY: The Archdjinni of Rings - Hoopa", which premieres July 18th!
The book also comes with coloring pages featuring popular characters, as well as free gifts! There's a limited number available, so get yours quick!

*Distribution of the stickers and the book will both end when supplies run out.
*Some stores will not be participating in the campaign.
For more information, see the Tsutaya Kids Campaign website

Source: http://www.pokemon-movie.jp/news/?p=1838