Looks like this could be the REAL game that’s in development. A new Pokemon Mystery Dungeon title with characters from Black and White! These scans showed up recently on 2ch~
Remember, this is just a rumor for now. But a very believable one nonetheless.
UPD: Sadly, Kriffix translated the Japanese and it does NOT have any relevance to the screenshots. This rumor is BUSTED 🙁
ps- Thanks PD for the tip! (I’m still plugging Mt. Moon today, so go over and join!)