3DS and Wii U eShop balances are now being merged with the upcoming 3DS update, which means leftover funds from either console can be used with the other. And on top of that, Nintendo Network IDs will now be shared across both the WIi U and 3DS platforms with the upcoming December update.

Nintendo also hinted at the possibility of unified accounts across both platforms with NNID. The following is a PR release from earlier.

REDMOND, Wash.–(BUSINESS WIRE)– A December system update for the Nintendo 3DS portable system will allow users to combine their Nintendo eShop account balance for both Nintendo 3DS and Wii U. Nintendo announced the news during a Nintendo Direct video released earlier today.

After the Nintendo 3DS system update, users can 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 and a wireless Internet connection, users will be able to connect with players around the world to share their experiences and game tips through Miiverse on Nintendo 3DS. For more information and notices from Nintendo about the system update, visit http://www.nintendo.com/3ds/nnid.

To view the Nintendo Direct in its entirety, visit http://www.nintendo.com/nintendo-direct. An overview of the news discussed includes:

Nintendo 3DS News

YouTube will be launching this month for Nintendo 3DS. Nintendo 3DS owners with a broadband Internet connection will be able to watch all their favorite YouTube content on the go, browsing on the bottom screen while viewing on the top screen.

The Legend of Zelda: A Link Between Worlds

Today, Nintendo showed a new trailer for the game, and the first of four 15-second mini-trailers for The Legend of Zelda: A Link Between Worlds debuted on Nintendo’s Instagram page. Nintendo detailed a number of characters, including Irene and her magic broom; Seres, who is trapped in a painting; and Gramps, who can help facilitate battles with other players encountered via StreetPass. Also: Milk Bar confirmed!

On Nov. 22, a new Nintendo 3DS XL bundle will launch at a suggested retail price of $219.99 that includes Nintendo 3DS XL hardware with gorgeous gold-and-black coloring and the iconic Triforce on the exterior, as well as a download code for The Legend of Zelda: A Link Between Worlds. The game launches in stores and in the Nintendo eShop on Nov. 22 at a suggested retail price of $39.99.

Exclusive SpotPass Content at Nintendo Zone Locations: Anyone with a Nintendo 3DS who visits a Nintendo Zone location can receive StreetPass Mii Plaza data from the last six players to visit that location. Exclusive SpotPass content will be available at Nintendo Zone locations in November for Nintendo 3DS owners who also own the following games, including:
An Animal Crossing: New Leaf raccoon wall clock is available until Nov. 14.
An Animal Crossing: New Leaf cat tower available Nov. 15-28.
An Animal Crossing: New Leaf rolling suitcase available Nov. 29-Dec. 12.
A Super Mario 3D Land Mystery Box starting Nov. 22.

Mario Party: Island Tour: The game offers seven new game boards and 80 new mini-games, including some that use the motion controls of Nintendo 3DS, and the ability for four Nintendo 3DS owners to play all multiplayer game content with only one copy of the game via Download Play. The single player Bowser’s Tower has players playing through 30 floors of mini-games, with a boss battle every fifth floor. Additionally, players also can engage with other players who also have the game in StreetPass mini-game competitions. The game launches in stores and in the Nintendo eShop on Nov. 22 at a suggested retail price of $39.99.

The new Kirby game for Nintendo 3DS has a name: Kirby: Triple Deluxe. More information about the game will be announced in the future.

Bravely Default: A Collector’s Edition of the game will be available exclusively at select retailers. The bundle includes the game, an art book, a soundtrack CD and 34 augmented-reality cards. The Collector’s Edition and standard version of the game both launch on Feb. 7.

Professor Layton and the Azran Legacy: The final game in the second Professor Layton trilogy launches in stores and in the Nintendo eShop on Feb. 28.