Intelligent Systems is under my opinion an underestimated developer. Users tend to deify the common Nintendo titles, but Intelligent Systems deserves some credit after Paper Mario, Fire Emblem and the legendary Super Metroid.

The group could be working on a new chapter of Paper Mario for Wii U. For that scenario, Walmart should have listed the game as a slip and not for mistake.

For the record:

paper mario walmart 600x285 Paper Mario for Wii U listed on Walmart | VGLeaks 2.0

Thanks to the nameless dude.