There must be something weird going on with manufacturers lately - first Huawei released an alpha build of ICS for the Honor, and now Sony Ericsson (soon to be just Sony) has released an ICS ROM for certain unlocked Xperia devices, including the Arc S, Neo V, and Ray.
Since it's an alpha ROM, it's not made for day-to-day use, as it is limited to just a few functions at the moment.
Sony Ericsson's original Xperia arc was a great phone, winning Best European Camera Phone from EISA, and another award for its sleek design. The arc's next iteration- the Xperia arc S was announced by Sony today in Berlin, and ups the ante over its predecessor by packing in a 1.4 GHz Qualcomm Snapdragon processor and a sweep panorama camera function that has the capability of creating 3D panoramas. The phone also comes with access to Sony's Music and Video unlimited services, bringing a lot more entertainment to your device.