The new Android 4.0.4 Ice Cream Sandwich firmware (version number 4.1.B.0.587) that is planned for the 2011 Xperia line has started to roll out on select handsets. We’ve noticed that it appears to be available for the Sony Xperia arc, Xperia arc S, Xperia ray and Live with Walkman.
Changes include better performance with the dialler/video recording and the notification LED now seems to work for missed calls (although it is still not working for SMS). There is also a new ’77’ baseband. Hopefully, the update for other 2011 Xperia handsets will start rolling out shortly.