Apparently, the Circle Pad Pro will not be supported. Don't really care though, but it's worth to share. So what does that second stick even do in this game? Was a second stick ever even needed in Smash Brothers? We'll see in the future I guess.
http://www.ign.com/articles/2014/09/06/super-smash-bros-3ds-will-not-support-circle-pad-pro
3DS Friend Code: 0533 - 6146 - 0418
PSN ID: atylerman5