It's perfectly plausible for there to be a new Cooking Mama game coming out in the fall, of course, as that's the cornerstone of Majesco's business. The publisher has recently begun moving toward more 3DS games, with announcements of The Hidden, Face Kart: Photo Finish, and Pet Zombies in 3D.
Meanwhile, if you want Cooking Mama on your 3DS ahead of time, you can scan the Cooking Mama Mii prepared by Majesco.
