Sony has made available the Android 4.1.2 Jelly Bean platform for its Xperia S devices, but it has been already brought to commercially available handsets, it seems, and is now up for grabs for all those interested in getting it for a spin.
The OS comes with firmware version 6.2.B.0.68, and it appears that it can be installed only on Xperia S (LT26i) devices.
According to a recent post on the XDA-Developers forum, users should not try cross-flashing it, as it might ... (read more)