Sony Mobile has released a new firmware update for a number Xperia X series models, which adds the 1 May 2017 Android security patch. The Xperia XZ and Xperia X Performance have seen their build numbers move from 41.2.A.2.199 to version 41.2.A.2.223 in this new software.
While, at the same time, the Xperia X and Xperia X Compact have seen their build numbers move from 34.2.A.2.47 to version 34.2.A.2.69. The Xperia X and X Compact remain on Android 7.0 for now. No other changes have been noted so far. We will include FTF firmware links for all variants in due course.