While 'PlayStation Phone' seemed to be the way to go for what is essentially a PlayStation phone, the device is most likely going to be branded 'Xperia Play' by Sony Ericcson. 

This comes after learning of a number of .com, .net, and .org domain names registered as XperiaPlay by a PR agency known as Jung Relations, whose long list of clients includes Sony Ericcson. 

Xperia Play is set to launch at MWC this February, but won't reach retail store shelves until April.