New firmware version number 6.1.1.B.1.89 has been certified for Sony Xperia handsets running the NovaThor U8500 chipset – the Xperia P (LT22i), Xperia U (ST25i), Xperia go (ST27i) and Xperia sola (MT27i). This firmware replaces the last update (6.1.1.B.1.75) and will most likely be the last Android 4.0.4 Ice Cream Sandwich firmware before we see Jelly Bean arrive.
Update: Just to clarify, only the Xperia P and Xperia go are due to receive the Jelly Bean update.
Thanks Crossbl!