According to this, SOE boss John Smedley doesn't reckon cross-platform play between PC and PS3 gamers is going to happen in spy-shooter MMO The Agency.
“If I was a betting man, I’d bet that we don’t allow it,” he said. “You’ll still be able to log in with your character on either [PS3 or PC].”
He added, "We’re going to start play-testing that soon, but I’ll be honest: I think that our expectations are that we’re going to decide that we won’t have cross-platform play, simply because of the difference in [control schemes]."
The Agency is looking cool enough. There's not even a tentative release date for the game as yet.