The official Pokémon movie website has updated. Translations follow:

Episode 1 of the TV Series Will Be Aired on TV

Episode 1 of the TV series will be aired on TV!
Will you watch episode 1 after watching the movie?! Will you watch the movie after watching episode 1?!

We've decided to air "Pocket Monsters episode 1", which was screened during the emergency meeting held by the Rocket Gang to commemorate the premiere of "Pocket Monsters the Movie: I Choose You!",
on broadcast television!
During the TV show "The Pocket Monsters Anime Premium 10", which will consist of 10 episodes and will start airing on the TV Tokyo network starting July 23rd,
we will rebroadcast memorable episodes from the older TV series, chosen by celebrity Pokémon fans and prominent people related to the franchise.

For the monumental first week, we'll show the first episode, "Pokémon! I Choose You!"
This episode was selected by Kunihiko Yuyama.

You can watch this nostalgic first episode of the TV series after watching the movie,
or you can go to the theater after watching the first episode of the TV series.
Either way, this is a long awaited project that will make your eyes completely overflow with emotional tears both two and three times! Definitely look forward to it!

"The Pocket Monsters Anime Premium 10"
Starts on the TV Tokyo Network Sunday July 23rd and airs for 10 weeks.
Airs every Sunday from 25:35 to 26:05
*The show will air on Tv Aichi, TV Hokkaido, TV Setouchi and TVQ Kyushu Broadcasting at this time as well.
*It will air on TV Osaka every Monday from 25:05 to 25:35 starting Monday July 24th.

Episodes will be selected by Kanata Hongo, Shiori Sato, Shoko Nakagawa, Rica Matsumoto, Ikue Ohtani, Director Kunihiko Yuyama and more

Source: http://www.pokemon-movie.jp/news/?p=2940