T-Mobile US has announced that it will be offering the Xperia Z3 (D6616) on its network this fall. The handset will be available in black only, but will see a boost to the internal storage from 16GB to 32GB. The D6616 variant will support LTE bands 2, 4, 12. No specific timing or pricing details have been announced so far, we’ll bring you news as we have it.