It looks like Namco Bandai has opted not to bring the giant robot action of Mobile Suit Gundam: Gundam vs Gundam Next to the PS3 after all. They've chosen instead to stick to what works and have announced that a PSP port is coming.
The PSP port -- titled Mobile Suit Gundam: Gundam vs Gundam Next Plus -- will feature a new Mission Mode and the addition of Reborns Gundam, Wing Gundam ZERO and Gundam Nataku. It's set for release in Japan this December.
Scans courtesy of Wii@Everyday