By Marina Lopes NEW YORK Tue Apr 22, 2014 7:29pm EDT (Reuters) – AT&T Inc on Tuesday raised its forecast for full-year revenue growth to reflect its acquisition of LEAP wireless in March and the popularity of a new handset pricing model that charges customers for devices separately from their wireless plans. Like other carriers, AT&T is seeking growth in a nearly saturated environment, making strategies such as alternate pricing plans more crucial to attract […]