ESP are developing a new Twisted Metal game. Jaffe semi-confirmed it in 2008, we all know, and he knows that we all know. The problem is that he isn't allowed to talk about it until Sony gives him permission, so he is forced to deny everything about the game's existence (though he's given more than enough subtle hints reconfirming what the game is)
Look at what he said here, though. He is responding to a rumor that states "Twisted Metal: Harbor City" will be announced at E3. He flatly denied that he is working on "Twisted Metal: Harbor City" but that does not mean that a Twisted Metal game is not what he is working on at the moment. As for whether he and his game will be at E3, he's sent mixed messages, so I have no idea.











