Nintendo has updated the firmware for its 3DS console.
This major update, now available directly via your 3DS console, will enable you to shoot up to ten minutes of 3D video and make stop-motion animations.
The update, which is now available directly through your 3DS console, adds new puzzles to the StreetPass Mii Plaza, along with a new dungeon for the StreetPass Quest game. These games are part of the unique Street Pass functionality of the 3DS, that allows users to share Miis and profile information as they pass each other on the street.
If you own a 3DS, it should automatically prompt you update to this new firmware. Otherwise, you can perform a system update, as summarized on Nintendo's support site.