Sony will start upgrading 2011 Xperia lineup smartphone with Android ICS 4.0 in mid-April and expected to finish it by end of June. The first Xperia devices to get Android 4.0 with be Arc S, Neo V and Ray. These device will get upgrade to Android ICS 4.0 in mid-April which will continues for 4-6 weeks.
The next Xperia device which will get Android 4.0 upgrade will be all remaining Xperia series smartphone. These Xperia series smartphone includes Xperia Arc, Xperia PLAY, Xperia Neo, Xperia Mini, Xperia Mini Pro, Xperia Pro, Xperia Active and Sony Ericsson Live with Walkman. But the slight bad news for the user is that these smartphone won’t receive their proper upgrades until the end of May or early June.
We’ll be sure to drop you another update when these devices actually start receiving updates over-the-air, so stay tuned.
Source: Sony Mobile Blog