The official Pokémon movie website has updated. Translations follow:

The Next Generation World Hobby Fair '18 Winter is Here

The Next Generation World Hobby Fair '18 Winter
will be held at four venues across Japan: In Nagoya, in Tokyo, in Fukuoka and in Osaka.
The Pokémon Booth there is filled with fun,
ranging from video game demos, the latest information on the movie and the anime,
fun stage shows, events and more!

Fair schedule:
Sunday January 21st: Nagoya Fair (Nagoya Dome)
Saturday January 27th and Sunday January 28th: Tokyo Fair (Makuhari Messe (in Chiba))
Sunday February 4th: Fukuoka Fair (Fukuoka Yahuoku! Dome)
Sunday February 11th: Osaka Fair (Kyocera Dome Osaka)

http://www.whobby.com/

Source: http://www.pokemon-movie.jp/news/?p=3181