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.
Interview with Michael Aschenbrenner
RCMADIAX boss talks about Blok Drop U
The power gloves add some killer moves!
The latest Hyrule Warriors footage
Living in 8-bit
A journey through the NES, SMS and GB
Wii U 5.1.0 System Update Released
Transfer data between separate consoles
Aonuma Talks New Zelda
Wants the next Zelda to be "vast"
Is There Too Much Fire Emblem in Super Smash Bros?
No, and here's why...
2014 Elite Status Gifts Have Been Announced!
Choose your game..
Cost's Two Cents: The Graphics Asymptote
How much better can we make our games look?
New Features in Pokemon Omega Ruby / Alpha Sapphire
And Pickachu takes up Cosplaying
Fire Emblem Awakening makes a Super Smash Bros splash
Lucina, Chrom, more and a special return guest
Wii's World is not officially affiliated with Nintendo! (but they wish we were).