Question: Are WWE working on a Nintendo 3DS, Nintendo Wii and/or Nintendo Wii U application for their WWE Network service?
Updated Answer (July 21, 2014): WWE mentioned via Twitter they're considering releasing a WWE Network application for every device that's powerful enough to run that service.
@chandmw97 We are endeavoring to add WWE Network to every device capable of playing it. Thanks for your patience and support! ^SD— Ask WWE Network (@AskWWENetwork) July 21, 2014
It's pretty safe to say that the Wii, Wii U and 3DS is powerful enough to stream a video from the WWE Network, considering Netflix and Hulu are currently supporting all of those platforms.