Barcelona is the place for the MWC, (Mobile World Congress) which is held in February. Sony Ericsson usually has a press conference the Sunday before the MWC and although Sony Ericsson has stated that there will be no changes in 2011, the invitations says otherwise. Invitations that were sent out by Sony Ericsson stated that there will be new Xperia branded phones.
As far as the PlayStation/PSP phone...there's been no mention as if this will be unveiled or announced before MWC, but that doesn't Sony Ericsson will not unveil it. It looks as if we may just have to wait and see what Sony Ericsson has planned after the MWC.
via: Sony Ericsson confirms new Xperia products for Mobile World Congress 2011 » Eurodroid