For whatever reason, Sony wasn't able to finish up PlayStation support for the Xperia S before the phone hit store shelves in Europe. Today, though, that placeholder link in the phone's app tray now loads to a web page where the PlayStation Store and PS Pocket app can be downloaded for the Xperia S. The same goes for its Japanese counterpart, the Xperia Acro HD.
To get your fill of classic 32-bit titles, you'll first need to enable non-Market applications in Settings > Applications, then run "Let's start PS store" in the app tray. You'll then be able to download the two apps, which in turn will let you buy and play games. We're seeing around a dozen titles available on our review unit, though some of those are still only playable on the Xperia Play. If you don't have one already, you'll need a PlayStation Network or Sony Entertainment Network account to access Sony's gaming catalog.
Sony plans to bring PS certification to all its 2012 phones, including the Xperia P, U, Ion and the recently-announced Xperia Sola.