Sony Ericsson's Playstation Phone has been rumored for some time now. New information states that the official name could be Sony Ericsson XPERIA Play, if a new batch of freshly-registered domains can be trusted. Right now the pages do not hold any content and are just place holders to stake out the name.
We are supposed to find out more at MWC 2011 this coming February, so stay tuned. The actual release is rumored to be in March, though with nothing final we are waiting from official word.