Sony Ericsson: delivered an alpha version of Ice Cream Sandwich for Xperia Arc S, Xperia Neo V and Xperia Ray

Sony Ericsson is the first chopping an official version of Ice Cream Sandwich in its terminals (Xperia Arc S, Xperia Neo V and Xperia Ray only). Attention, it is absolutely not the end, because it lacks features and thus contains bugs.
Who will get the first official version of Ice Cream Sandwich? That is the question that has so far no response, although this should be definitely the Nexus S [we know that Google employees have already migrated]. Could be heard here and there leaks ROM for Samsung in particular, but nothing official behind it.
On its Developer World portal, Sony Ericsson has released the first alpha ROM of Android 4.0.1 (Ice Cream Sandwich), which follows the article explaining the process of developing an update. Who says alpha, said necessarily incompatible with daily use, share bugs, but also the current limitations (it is impossible to call, to use the Wi-Fi …). Only Xperia Arc S, Xperia Neo V and Xperia Ray can taste it, the first Xperia Arc and Neo cannot because their scores are not the same.
If you have any of these three phone Xperia Arc S, Xperia Neo V and Xperia Ray, you must unlock the bootloader to be able to try this then put into the mouth.