Japanese magazine CoroCoro is teasing the fact that it will announce an entirely new Pokémon in a forthcoming issue.
Named "Magiana", the 'mon has been shown off in a trailer for the next issue - in silhouette form, at least.
The issue in question hits newsstands in Japan on February 15th, which is next Monday. It's not clear how much information CoroCoro will be revealing at that point, as literally nothing else is known about this new Pocket Monster.
Here's the cover - the Magiana image is at the bottom: