AT&T announced the expansion of its 4G LTE coverage into nine new markets today, along with plans to expand into at least 40 more markets by the end of 2012. The company’s LTE coverage is now live in 60 markets, so the new plans mean AT&T will be in over 100 total markets by year’s end, roughly doubling its prior footprint. While this is a large expansion for AT&T, the company still trails Verizon by a wide margin — Verizon…
