Nintendo engineers are working hard to upgrade Wii U so that it can simultaneously support two tablet controllers, sister site Develop understands.
Nintendo and development partners had previously indicated that only one tablet controller could work with the system, due to technical limitations.
But Develop's source, speaking on the condition of anonymity, explained that multi-tablet support is one of three remaining variables for the next-gen console. The other two are RAM capacity and processor speed.
The person said Nintendo appears to be on the cusp of solving the technical conundrum of a single Wii U device supporting two tablet controllers. The source added that there was no indication, and very little chance, that four tablet controllers would ever be supported.
For the full scoop, visit Develop.