"Sony Mobile Japan has just announced two new handsets, the high-end Xperia GX and medium end Xperia SX. Both handsets are the first LTE handsets for Japan. The Xperia GX looks like the update to the Xperia arc and we would expect at least this model to launch in Western markets. The Xperia GX was previously using the codename ‘Mint’. The Sony LT29i ‘Hayabusa’ will be the same as the Xperia GX without LTE functionality." Read more here: