http://www.techwench.com/sony-ericsson-cutting-the-relation-with-symbian-operating-system/

Cell phone makers Sony Ericsson on Friday announced that they are officially withdrawing from Symbian OS, a move that will put the Sony Ericsson platform on the life support tab. As Sony Ericsson has cut the chord with Symbian mobile operating system, it signifies that the only main cellphone maker out there in the market left building phones for the Symbian platform is Nokia.