Sony should not offer to update to Android 4.1, aka Jelly Bean, for Xperia released in 2011.
Sony, through the voice of John Cooper, product manager for Sony Mobile in the UK, has posted several responses on Facebook. He argued that neither the Xperia Arc S, or the Xperia Mini Pro should not be entitled to an update Jelly Bean. However, he confirmed at the same time ICS (android 4.0) will be offered to all Xperia 2011. The deployment of Ice Cream Sandwich began in June 2012 Xperia S.

Recall that the Xperia Arc S is the spearhead of the Xperia range 2011. One can imagine that if he is not eligible for an update JB, all other Xperia released in 2011 probably did not taste Jelly Bean.

Only the 2012 Xperia will receive this update although no timetable has been advanced by the Japanese manufacturer.