Today Nintendo announced the release date for Mario Vs. Donkey Kong: Tipping Stars. The game will release for both Wii U and Nintendo 3DS on March 20th.
Additionally, those who purchase the game for either system will receive a code to download it for the other system free of charge.
Unlike most modern cross-buy games, the download is code-based, and the game's producer adds it can even be given away to a friend.