Sony is adding another option to its smartphone lineup with this Xperia A it just announced in Japan. Spotted a few days ago in an FCC filing, the SO-04E will be released on the 17th on NTT DoCoMo. Japanese carrier NTT Docomo has officially announced the Sony Xperia A smartphone as part of 2013 summer election.  key specifications Display: 4.6-inch HD reality display with a resolution of 720×1280...