No platform is mentioned in the OFLC listing. However, Q-Games has developed several DSiWare games, including Art Style DigiDrive, Starship Patrol, and Trajectile. Q-Games is also widely known for their PixelJunk games on PlayStation 3.
3D Space Tank will be published by Nintendo. NWR will have more details on the game as they are available.
Could this be a spiritual sequel to the Tanks game found in Wii Play?