Pokémon + Nobunaga's Ambition (ポケモン+ノブナガの野望) is mix of the two gaming series: Pokémon and
Nobunaga's Ambition. The game was first revealed at the
Jump Festa 2012 (ジャンプフェスタ2012) event which was held on December 17th and 18th, 2011 where
they had a full booth setup to showcase the teaser trailer, artwork from the game and screenshots. The February 2012 issue of CoroCoro announced the official release date of the game in Japan as
March 17th, 2012. Amazon.co.jp also released the box art for the game.
Source:
Amazon.co.jp