Splatoon for Wii U was featured today during the Nintendo Digital Event at E3 2014.
Take a look at the new E3 trailer below:
Splatoon is an 8 player 4-on-4 online action game for Wii U in which players can switch between being a squid and a person. The game releases in 2015 for Wii U.
Source: Nintendo E3 2014 Digital Event