Well all we have is a name, and its a name of an existing PSP / PS3 game... what makes you think they'd release it with the same name but it be anything other than a port or at best an enhanced port or at a push - maybe a remake?
I would understand all of this if the retailer were GameFly ( recently, it leaked stuff from PSDestination, and also the definitive name of Mario Tennis 3DS, and its US release date, just to say ), or Amazon, especially Fr. ( it leaked Marvel v.s. Capcom 3 on Vita, remember? )...but Play.com I think isn't remembered for having a tradition in spoiling yet-to-be-announced games.