The official Pokémon movie website has updated. Translations follow:

To Commemorate the Premiere of "Pocket Monsters the Movie: I Choose You", We Will Air Three TV Specials One After Another This Summer!

No 1:
The I Choose You, Summer Movie! 2 Hour Pokémon Special
We will air "Volcanion and the Ingenious Magearna"!



On TV Tokyo Saturday July 8th, 12:30pm
On TV Osaka Sunday July 9th, 11am
On TV Aichi Saturday July 8th, 12:35pm
On TV Hokkaido Saturday July 8th, 7pm
On TV Setouchi Saturday July 8th, 12pm
On TVQ Kyushu Broadcasting Sunday July 9th, 1pm

No 2:
We will air a Movie Pre-Premiere Special!

On the TV Tokyo Network Thursday July 13th, 5:55pm to 7:25pm

No 3:
A 20th Anniversary Pokémon Movie Premiere Special
The number one Pokémon movie will be chosen by you!

We will air one of the 19 popular movies released thus far!
Submit your personal best Pokémon movie and choose which movie we'll air!
*The submission method will be announced on Friday June 16th

On TV Tokyo Sunday July 16th at 1:35am to 3:20am
Scheduled to be aired all across Japan at later dates

Source: http://www.pokemon-movie.jp/news/?p=2718