SAN RAMON, Calif. (AP) – Apple says it will roll out a new privacy control in the spring to prevent iPhone apps from secretly shadowing people. The delay in its anticipated rollout aims to placate Facebook and other digital services that depend on such data surveillance to help sell ads. Although Apple didn’t provide a specific date, the timetable disclosed Thursday means a feature known as App Tracking Transparency is likely to arrive in March or April. Apple has been holding off to give Facebook and other app makers more time to adjust to a feature that will require iPhone users to give explicit consent before apps can track them.