AT&T (NYSE: T) is giving more of its wireline customers the option to get its 75 Mbps U-verse broadband service tier, announcing that it has expanded the service in seven new markets. The service provider will begin offering the speed tier in Augusta, Ga.; Charleston, S.C.; Cleveland and Columbus, Ohio; Fort Lauderdale and Miami, Fla., and St. Louis, Mo. FierceTelecom has a complete look here.