Sony has moved to the separation of the upgrade schedule Ericsson Xperia models for a little backwards. The first customers to receive units of the Xperia series Ice Cream Sandwich (ICS), probably in April. The devices Xperia arc S, V and Xperia neo Xperiy ray will first receive Android 4.0.
Sony estimates the length of the country-specific adaptations and the subsequent distribution of 4 to 6 weeks. In the second wave, Sony will update the devices arc Xperia, Xperia play, neo Xperia, Xperia mini, mini pro Xperia, Xperia pro, Xperia active and live use with Sony Ericsson Walkmen - users may be able to obtain from the end of May, the update. Also, the Xperia S is Android 4.0 will, however, according to Sony until the end of the second quarter.
In recent blog post about Sony has way down to is that there will be no update notification on your phone and an update on the PC software must be performed. Under the source you will find an interesting article (in English) about update problems of older phones with 512 MB of RAM. The basic article suggests, that can occur when the devices with little RAM after the update may be shorter and longer battery life App load times. This is because of the new features and changes in Android 4.0, which have been designed for devices with 1 GB of RAM. Under certain circumstances, customers could use the old 2.3.x version of Android so perhaps better in everyday driving.