According to Young Justice: Legacy Facebook page, the Wii & Wii U version will be cancelled. Here's what they said below:
We regret that this decision will prevent some fans from playing the game and the finding out what happens in the story. There were a number of reasons ranging from quality issues to lack of retailer support, but know that we didn't make this decision lightly. We are a fairly new company, and unfortunately both of these platforms presented challenges we couldn't overcome. Please accept our sincere apology. We look forward to delivering the Xbox360, PS3, 3DS, and Steam versions in less than a month.
Young Justice: Legacy is set in the five-year period between Young Justice's first season and second season. The game is set to come out on November 19, 2013.
Posted by Kristina Collins