Nintendo of America has confirmed that a new Nintendo 3DS 3DS system update supports Nintendo Network IDs and lets users combine WiiU and 3DS eShop balances. The new Nintendo 3DS system update also adds support for Miiverse on 3DS. Nintendo of America has yet to say when the update will be going live.
A December system update will allow users to register their Nintendo Network ID for Wii U on their Nintendo 3DS systems and combine Nintendo eShop account balances. This will enable them to purchase Wii U software using the remaining balance on their Nintendo 3DS eShop accounts, and vice versa. Nintendo 3DS owners who do not own a Wii U system can also create their own Nintendo Network ID for the first time. This system update will also mark the beginning of Miiverse support on Nintendo 3DS. With a Nintendo Network ID, users will be able to connect with other players around the world to share their experiences and game tips through Miiverse on Nintendo 3DS.