From AT&T:

AT&T* today announced plans to launch a high-speed 4G LTE-based in-flight connectivity service for airlines and passengers in commercial, business and general aviation. The service, planned to be available as soon as late 2015, will be capable of providing in-flight broadband for customers including fast, reliable Wi-Fi and onboard entertainment.

Looks like a shot across the bow of in-flight internet provider Gogo.

[Via Business Insider]