The platform holder’s president Satoru Iwata has admitted that the firm is hard at work on a follow-up to the all-conquering, motion-sensing system.
However, Iwata added that current designs having to "be thoroughly vetted" before being ready for market.
“The hardware team started work on the next thing as soon as they were done with their previous project, but what they think up doesn't necessarily become a product.
“We only turn something into a product after it's been thoroughly vetted inside the company. We're not at a point where we can give specifics, but of course we're working on it.”
In the same interview with The Wall Street Journal, Iwata said that Mario creator Shigeru Miyamoto had completed all of his stated creations for the console – and added that the retail price of Wii MotionPlus would be “very affordable”.