Mario vs. Donkey Kong is a prototype tech demo made specifically for showcase at GDC, so chances are this is not a game that we'll see in the future.
However, there's been no confirmation that it's NOT in the works as a full title. Check out the video below to see the very cool demo.
3 news items
Pokemon: Omega Ruby/Alpha Sapphire Dual Pack Confirmed
Why choose, when you can have both
Wii U Owners Frustrated Over Low Stock for Bayonetta 2
This witch is proving elusive for gamers
Super Smash Bros. Overload
8 player smash, new game modes, stage builder, and the return of Mewtwo
Amazon Reveals Unannounced Modes for Wii U Version of Smash Bros.
Another day, Another Smash Bros. leak
Fifth Annual NES Marathon scheduled for November 8th
More than 750 Games, 2 friends, and 1 great cause
Game Freak Exploring Amiibo Functionality
Gotta buy 'em all
Donkey Kong Country Returns to Virtual Console!
Only in Europe...
Nexis Games Releases New UCraft Information
Digging through the details
October CoroCoro Shows new details and Mega Pokemon for Omega Ruby and Alpha Sapphire
Bees, and birds, and dragons. Oh my!
Wii's World is not officially affiliated with Nintendo! (but they wish we were).