Seemed like a stretch, but then I read through this
When someone in that thread mentioned that the image Sony put up could have been hinting at a new R&C game, someone from Insomniac replied posted "intereeesssting".... And that whole thread, the Insomniac devs were just teasing us in the midst of out speculation =p
Then there's this.
As long as it's a standard R&C title, then it will be good. People are always saying that thier last good title was aCiT, and this one is likely to be a non spinoffy R&C game.
UPDATE: Confirmed to be an Insomniac related announcement.
Sony posted this image and tagged Insomniac Games in it.