Sony Ericsson as 1 upped other android OEM’s in the last few days with availability of a ice cream sandwich alpha ROM for select Xperia™ phones. This shows the continued support that the company has for developers. The alpha ROM can be loaded onto Xperia™ arc S, Xperia™ neo V and Xperia™ ray.
This ROM is strictly targeting advanced developers, and it will not work for ordinary everyday usage, as it only has a limited set of features working (you can for example not make any phone calls). Several more legal and usage conditions apply
If you are developer visit the blog below for more info: