The official Pokémon movie website has updated. Translations follow:
Media Information
Tv Shows:
Sunday September 3rd: "The Pocket Monsters Anime Premium 10" on TV Tokyo - Message (from Ikue Ohtani)
Sunday September 10th: "The Pocket Monsters Anime Premium 10" on TV Tokyo - Message (from Taiiku Okazaki)
*Note that these are the scheduled air dates, and as such are subject to change without notice.
*Broadcast dates will vary depending on where you live. (some areas exempt)
For details, please see the website of your local TV station.
Source:
http://www.pokemon-movie.jp/news/?p=3133