In spite of the color-based lawsuit, AT&T is planning to expand its Aio Wireless service nationwide in September. The prepaid service is only available in a few markets right now including Florida, Texas, Chicago, and Atlanta.
Aio Wireless offers only three different plans and an assortment of mostly mid-range phones. Customers of Aio get access to AT&T's 4G LTE network (with a cap), then additional data at lower speeds. Signing up before September 29th gets you a free month of service, provided you maintain an account for at least three months.