[WindowsCentral.com]

AT&T has plans to start offering Wi-Fi calling support by 2015. The system would allow subscribers to place calls using their phone's Wi-Fi connection instead of the cellular network. If that sounds familiar, it should, as T-Mobile has offered Wi-Fi calling for years now, and even dedicated their Uncarrier 7.0 press event to expanding on the concept.

Full story from the WPCentral blog...