Family Guy Finale - What the HECK????

Has anyone seen previews for the Family Guy finale? It looks suspiciously like they're showing the DVD that was released several months ago, "Stewie Griffin - The Untold Story". I feel totally screwed! I bought the friggin' dvd, and now they're going to be airing it FOR FREE to the general public???? Nevermind the fact that I'VE ALREADY SEEN IT!!!! Aren't finales supposed to be new?
I'm angry!

It better have LOTS of new scenes. . . I'm still annoyed. Finales should be completely brand new, not slightly spiced up OLD episodes.