Later today GameTrailers TV will reveal the first trailer for a new PlayStation 3 exclusive game, reportedly from a Sony first-party studio. The game isn’t from Insomniac and it’s not from David Jaffe’s Eat. Sleep. Play either.

David Jaffe is certainly back on the internet, taking guest spots on the PlayStation reality show The Tester, and posting vigurously on his personal blog. And, of course, we love him for it. Now he’s let loose that the latest PS3 game announcement will not be coming from his start-up studio, writing:

“We are working hard on our game and we’re looking forward to showing it to you today on GTTV…oh wait…that’s not us :)”

The tease. So cross Twisted Metal off your list and also anything you might be expecting from Insomniac Games, as previously confirmed here at PlayStation University. So who’s left? Evolution? Guerrilla Games? Sony Cambridge? Sony London? Sony Japan? Thinking caps on.

The exclusive PlayStation 3 has been announced, so read all about it here.