When Sony completed its acquisition of Ericsson’s share in their joint venture, it announced that its new subsidiary would be known as Sony Mobile Communications. It has now launched a new website called SonyMobile.com and is phasing out the SonyEricsson.com website.
Information is already available for a number of countries. The U.S. features the upcoming Xperia ion while the UK focuses on the upcoming Xperia S. A section for Canada has yet to launch unfortunately.
It also appears that Sony Mobile will use the @SonyXperia Twitter handle but it is not active yet.
Read more: Sony Mobile (Source: Xperia Blog)