Sony has started rolling out Android 4.0 update for Xperia Mini, Xperia Mini Pro and Live with Walkman. As the update is released in batches, not everyone will get it at the same time, so some consumers will have to wait for a few days.
These update will be available via PC Companion and Bridge for Mac softwares from Sony. Downloads are available at the source.
You can find the full changelog for the update for Xperia series smartphones here.
We are hearing reports that the update is live for Indian users as well. Do check and report back in comments.