Given Inaba's statement, it may also release this year.
Source: http://andriasang.com/comzk3/4gamer_megafeature/AndriaSang said:Hideki Kamiya
Challenge for 2012/Message to Fans: Kamiya said that he would like to announce a new game and make a comeback on the game scene and be known as more than just some guy who posts on Twitter.
Atsushi Inaba
Challenge for 2012/Message to Fans: Said that he believes 2012 will be the ultimate year for Platinum Games.