The Mario Strikers and Punch-Out devs are making Luigi's latest.
Next Level Games is making Luigi's Mansion 2 on 3DS, which is set for an early 2012 release.
Shigeru Miyamoto revealed the game's developer at the E3 2011 developer presentation. Development began with a test that Next Level did that was well loved by everyone at Nintendo. The Canadian-based company that worked on Punch-Out for Wii, and the two Mario Strikers games on GameCube and Wii.