The Nintendo 4D-ViewS (Or 4DS for short) is a device planned for mid-2016.
A 4D-ViewS is a device coloured Fire Red, Water Blue, Sunshine Yellow or Nature Green. It resembles the 3DS but it has projectors to replace speakers, which will, alongside the cameras, project the sound and images do the player feels like they're in the game.
Nintendo 4D Camera
Nintendo Letter Box
Nintendo 4D Video
StreetPass Mii Plaza