The official Pokémon movie website has updated. Translations follow:

Come Watch the Premiere Day Movie Screening That Includes Stage Greetings From the Entire Line-Up of the Extravagant Guest Voice Actors!!



To celebrate the premiere of the double feature "Pokémon the movie XY: The Archdjinni of Rings - Hoopa/Pikachu and the Pokémon Musicians", we will hold premiere day stage greetings!

The entire line-up of the extravagant guest voice actors will be present!
In addition to Tatsuya Fujiwara, who plays Barza, Koichi Yamadera, Shoko Nakagawa, Shinichi Shinohara and Mizuki Yamamoto will all be there!
And of course, so will Satoshi's voice actor Rica Matsumoto, director Kunihiko Yuyama, Pikachu and Hoopa!
We will truly hype up the premiere of the movie with these extravagant stage greetings!

Date and time: Saturday July 18th, immediately after the 8:30am screening and immediately before the 11:50am screening.
*The screenings use a seat reservation system, audience must leave the theater after the screening.
Speakers: Tatsuya Fujiwara, Koichi Yamadera, Shoko Nakagawa, Shinichi Shinohara, Mizuki Yamamoto, Rica Matsumoto, Director Kunihiko Yuyama (more planned)
*Please understand that the above schedule may change
Location: TOHO Cinemas Nichigeki (Yurakucho Marion, 2-5-1 Yurakucho, Chiyoda, Tokyo)

Tickets to the premiere date screenings with stage greetings will be distributed via lottery.
For application details etc, please see the Toho Application page

Source: http://www.pokemon-movie.jp/news/?p=1787