Sony has done an excellent job at being transparent with its progress on the bringing Ice Cream Sandwich to a number of Xperia devices. It has kept users aware of what's going on throughout the process, as well as shared alpha and beta builds along the way. Now, though, it looks like the beta days are behind them and the build is ready for prime time for a certain Xperia devices.
CyanogenMod (CM) has long been the modding community's custom ROM of choice, and for good reason: it takes the goodness that is basic Android (AOSP) and adds a hearty dose of all-around improvement. The list of devices supported by CM is quite a long and impressive one (truth be told, they do a better job of supporting devices than the manufacturers do), and last night, cutting-edge nightly CM9 releases dropped for the Sony Xperia Arc (Anzu) and Xperia Neo (Hallon).
Before Sony Ericsson became Sony Mobile, the company seemed committed to developing an Android 4.0 update, going so far as to release alpha ROMs for a number of Xperia devices, and more recently a beta for the Xperia Play. Here we are, a quarter of the way into 2012, and Xperia owners are still gnawing on last year's official Gingerbread. Although, there may finally be a light at the end of the tunnel; the Sony Mobile blog has announced that the first Android 4.0 updates will roll out to select Xperia phones in mid-April.
Back in December of '11, Sony [Ericsson] released an Android 4.0 alpha ROM for the Xperia Arc S, Neo V, and Ray. The Sony dev teams has now released an update to this ROM, bringing into its beta stages.
Since the previous release, Sony has made a number of improvements to the ROM, including an updated UI, improved lockscreen, activated GSM modem and FM radios, and a quick dialer.
Unfortunately, Google Apps are not available for this ROM, nor are Wi-Fi and Bluetooth connectivity, as they're both still waiting for approval before they can implemented into the product.