During the Nintendo Direct briefing we were shown that Nintendo is jumping into the social experience. When the system is first powered on, the home screen will be populate with your friends’ Mii characters. The “Mii Universe” will act as a hub where players can see what games their friends are playing.
In Miiverse you will be able to share screenshits with your friends as well as message each other while playing games. The Miiverse can be accessed from the Wii U, 3DS, online and mobile devices.