Dedenne has been confirmed to make an appearance in the upcoming Super Smash Bros for Wii U and Super Smash Bros for Nintendo 3DS games. Masahiro Sakurai (桜井政博), Director of the games, posted on Miiverse that in the upcoming games, Dedenne is hard at work too.

dedenne

Source: https://miiverse.nintendo.net/posts/AYMHAAACAAAYUKlLxf9O9A