Just got leaked.
In the preview for next month's issue of CoroCoro, it stated that it will include a world exclusive scoop poster for Volcanion and the new movie. However, it also stated this in the little section
全世界を巻き込む重大な発表
"a major annoncement that affect the entire world"
It's worth noting that February is typically the month that the main star of the movie is revealed and the full movie title with it.
In the preview for next month's issue of CoroCoro, it stated that it will include a world exclusive scoop poster for Volcanion and the new movie. However, it also stated this in the little section
全世界を巻き込む重大な発表
"a major annoncement that affect the entire world"
It's worth noting that February is typically the month that the main star of the movie is revealed and the full movie title with it.