Voice chat is not a standard feature for the Wii U. Late last week it was revealed that voice chat is only supported through third-party, officially licensed headsets plugged into the headphone jack of the WiiPad. Yes, the WiiPad has a built-in microphone, but don't hurt yourself trying to figure why that won't work. Also, things get really complicated when you realize the Pro Controller doesn't have a headphone jack.
We reached out to Nintendo for a comprehensive list of titles that support voice chat from the Wii U launch line-up. It'd know, right?
"Wii U will have in-game chat functionality for select games, including, but not limited to, Call of Duty: Black Ops 2, Assassin's Creed 3 and Mass Effect 3," the company responded to our query. "This feature will be supported by licensed stereo headsets that plug directly into the headphone port of the Game Pad. Licensed headsets are available from Turtle Beach and TRITTON."
Apparently the company is playing it close to the chest. The Wii U launches in under a month.