The official Pokémon movie website has updated. Translations follow:
Media Information
Magazines:
Thursday February 28th: "TV-kun" - Information on the movie
Thursday February 28th: "Pokémon Fan" - Information on the movie
Thursday February 28th: "Kindergartener Magazine" - Information on the movie
Thursday February 28th: "First Grader Magazine" - Information on the movie
Friday March 1st: "Pucchigumi" - Information on the movie
Friday March 1st: "Cíao" - Information on the movie
*Note that these are the scheduled publication dates, and as such are subject to change without notice.
Source:
https://www.pokemon-movie.jp/news/?p=3595