During today’s Nintendo Direct, Nintendo announced a new Paper Mario game for the Wii U, Paper Mario Color Splash. Color Splash takes place on Prism Island, where Paper Mario is tasked with bringing color back to the land, using a new Prism Hammer. It features a new battle mechanic where you paint cards and flick them to initiate fights.
Paper Mario Color Splash is expected to release later in 2016.
Source: Nintendo Direct