The Pikmin 3 20-minute shorts are now available for purchase, announced during Nintendo Direct today.
Shigeru Miyamoto, creator of Mario and The Legend of Zelda franchises, showed off a Pikmin animation at the Tokyo International Film Festival this year, and now those shorts are available for purchase. The three shorts are available for a $5 USD package. You can get them on 3DS or the HD version on the Wii U, with no cross-over unfortunately.
In addition to this news, the Pikmin 3 demo will be available through the Nintendo eShop, with all progress made during the demo carrying over to the full game upon purchase.