Just days after an LTE-Advanced variant of Samsung's Galaxy S 4 leaked, Korean carrier SK Telecom has officially announced it's launching the world's first LTE-Advanced wireless network. The Galaxy S4 LTE-A is also official, as the first device able to take advantage of the new technology for even faster data transmission speeds. According to the press release, SK Telecom plans to have as many as seven LTE-A devices available by the