It was leaked today from both Go Nintendo & Nintendo Everything that a new 3DS game (also coming to PS4 & Xbox One) called Cartoon Network: Battle Crashers is coming out in the future. Amazon was the one that leaked the game and listed the following description on the title.
"Cartoon Network Battle Crashers Leaked - 3DS, PS4 & Xbox One Brawler with CN Characters",
– by Maximum Games
– Side-scrolling action brawler
– 6 Playable Cartoon Network characters with 8 different play styles for endless combinations
– 24 unique, action-packed levels
– Combine heroes’ power to take out enemies
– 4-player local multiplayer drop-in, drop-out
– Unlimited amount of achievements, trophies, hidden room and objects to collect.