At Nintendo's 3DS Conference today, President and CEO Satoru Iwata has confirmed that in Spring 2012, to coincide with the release of the highly anticipated Kid Icarus: Uprising game, the company will make available to the public, 3 free 3-minute long shorts producted by animation companies Production I.G, Shaft and 4°C.
Just for those who don't know, Production I.G are probably best known for the Ghost in the Shell franchise, Shaft for the recent Puella Magi Madoka Magica and Studio 4°C for Steamboy and the recent Thundercats revival.
Source: http://wiiuandmii.com/production-i-g-shaft-studio-4°c-animate-kid-icarus-uprising-shorts/