A sequel was originally planned and was actually put into pre-production. Sadly, it was cancelled for unknown reasons. Instead, the development team went on to do different projects.
Dart wasbeing considered as a DLC fighter for PlayStation All-Stars Battle Royale, according to one of the game's modelers, who leaked a 3D model of Dart that he created on his online portfolio (after which his entire website was taken down). This would've been Dart's first appearance in a game in thirteen years. Ironically, this news dropped shortly after Shuhei Yoshida said in a podcast interview with IGN during E3 that All-Stars Battle Royale didn't perform well enough to pursue any new DLC.note Though he did use the words "never say never" is regards to All-Stars future.