Sightings of the new T-Mobile US LTE signals are now regularly popping up in U.S. cities ahead of the official launches of new LTE markets. Light Reading Mobile readers have noted that there are now LTE signals showing up in Austin, Texas. Your correspondent has spotted 4G LTE signals from T-Mobile all over Brooklyn and in Queens over the last week too. None are yet showing up, however, in midtown or downtown Manhattan. (See T-Mobile's 4G LTE Pops Up in NYC.) The TMoNews blog, meanwhile, notes signals in Philadelphia, Pa., San Antonio, Texas and Seattle, Wash. The operator itself has officially said that it will cover 100 million U.S. citizens by mid-year and 200 million by the end of 2013 with its LTE service. Staff at its New York stores have said the new network will arrive in the Big Apple this summer. — Dan Jones, Site Editor, Light Reading Mobile