BlazBlue Continuum Shift II
I don't believe I can accept that one. Not only is it a port, but a pretty shoddy one at that. It does have loads of content, but the gameplay is laggy, choppy, and performs substandard to a game of any expectation. Not only that, the controller options are down right ridiculous. They wont even let you use the Analog EVEN ON THE 3DS VERSION. No circle pad what so ever.
Sengoku Basara Chronicle Heroes
Haven't played it. No clue.
Shin Megami Tensei Devil Survivor 2
Not really a fan of FATLUS games. May or may not count depending on how straight you are.
Then again, is it even out? Wiki tells me it was announced in March 2011. (note we are sticking to ONE regional release zone here)
Okamiden.
Yeah, that actually makes the 6 month mark for the USA release.