Developer Sumo Digital has confirmed that Sonic & All-Stars Racing Transformed will not have voice chat support on Wii U.
The news comes less than a week after a Nintendo representative confirmed that in-game voice chat will not be possible through the GamePad's built-in microphone. Voice chat functionality is not integrated into the Wii U's operating system, meaning that it is solely up to the developer to implement it into the game. Moreover, in-game chat requires the use of licensed, third-party headsets that plug into the headphone jack on the GamePad.
Executive producer, Steve Lycett, confirmed that the Wii U's limitations in this area were the reason why the game would not feature voice chat support:
We don't support voice chat on WiiU for those reasons, one of the side effects of being a launch title basically. Does support it on PS3 and 360 though!
With more time, it may have been possible for Sumo Digital to add voice chat capabilities. And given that we still don't know everything about the Wii U's online infrastructure, it is possible that this could be patched in at a later date. Other launch titles such as Call of Duty: Black Ops 2 and Mass Effect 3: Wii U Edition will support voice.
Nevertheless, future support will be wholly dependent on developers implementing the feature, as well as consumers forking out for third-party headsets.