If you guys had been dreaming of playing this game with Nintendo Wi-Fi Connection, it is time to wake up and smell the coffee, 'cause the game had been confirmed to NOT support online play whatsoever! There will be a multiplayer mode all right... just... not via Wi-Fi. You need to gather a group of friends, and pit it in the same room apparently. Thankfully, it will be like the days of Star Fox Command, where you can Download Play against several DS owners when duking it out!
Also, expect taking photos of yourself to set as an icon for the multiplayer mode. Plus, similarly to the Master Quest on Ocarina of Time 3D, there are two single player modes. The 3DS mode, and the classic mode. The former is playing the game with gyroscope features, whilse the latter is playing the game the good, old-fashioned way.