It's OK to be confused about the Sony range, and which phone sits where. We would say the Xperia XZ lives between the Xperia X and the Xperia XZ Premium, but then there’s the Sony Xperia X Performance, and the Xperia XZs... which arrived as a sort of Xperia XZ 1.5.For the true Xperia XZ 2 we’re expecting improvements on both the XZ and the XZs, and...