Enlarge / The DirecTV app for iPhone.

AT&T purchased DirecTV in July 2015, and today pushed an update to the DirecTV iPhone app to implement the data cap exemption. “Now you can stream DirecTV on your devices, anywhere—without using your data. Now with AT&T,” the app’s update notes say under the heading, “Data Free TV.” This requires subscriptions to DirecTV and AT&T wireless data services.

It sounds like the data cap exemption may not apply to all data downloaded by the app, as the update notes further say that “Exclusions apply & may incur data usage.” The service is also “Subject to network management, including speed reduction.” We’ve asked AT&T for more information and will provide an update if we receive one.