You'll get to go one on one with the slippery one
Two new modes have been announced for Splatoon, as well as the inclusion of Amiibo.
Ranking Battle will include Splash Zones in which you try to get to specific areas in each stage. Battle Dojo will include local one on one battles and one TV screen, with the objective being to pop balloons.
Furthermore, A 3 pack of amiibo will be released on launch day (May 29) which include a squid, Inking Boy and Inking Girl. You can also buy the latter two individually on launch day.