The official Pokémon movie website has updated. Translations follow:

The "Pokémon the movie XY&Z: Volcanion and the Ingenious Magearna Music Collection" is Currently on Sale

Here is the original soundtrack to "Pokémon the movie XY&Z: Volcanion and the Ingenious Magearna"! The heatbursts of the battles and the emotional moments that brought tears to your eyes get reborn as high quality sound!! This is the first time an original Pokémon soundtrack is available in Blu-specCD2 format!

The soundtrack also comes with "an original Pikachu drink coaster & character stickers" as a limited first print extra!
*These limited editions of the soundtrack will be available as long as supplies last, and will then be replaced with the standard edition.

The soundtrack is currently on sale with a retail price of 2700 yen (tax included)!

For further informtion, see this page on the Sony Music Shop

Source: http://www.pokemon-movie.jp/news/?p=2376