Sony is not forget 2012 Xperia models, Sony is new hard FW update for this phone model. According to updates from the Sony support forum Mobile International , they will release firmware update version 4.1.2 is 6.2.B.1.XX instead of the current 6.2.B.0.211 for Xperia S / Xperia SL, Xperia ion and Acro S.
No specific information on this update, including what, but look at the FW series, this updated version can is also average. Hopefully, in addition to fix the current bug on Android 4.1.2, then Hope Sony will bring a few new interesting features.
Source: Sonyviet