AT&T announced last fall that it would begin its LTE rollout in mid-2011, and it's now finally delivered a few more details. The carrier has just confirmed that five markets -- Dallas, Houston, Chicago, Atlanta and San Antonio -- will be getting LTE sometime "this summer," with ten more as-yet-unnamed cities set to join them in the second half of the year. All told, AT&T says should cover about 70 million Americans by year's end. Of course, an LTE network needs some devices, but AT&T unfortunately isn't providing much in the way of details about those just yet -- it
