It’s been more than seven years since that final episode of Dexter aired, leaving fans all over the world desperately wanting more. And now, it’s finally happening! Showtime has confirmed a new limited series is in the works with a simple (and very Dexterish) tweet: Surprise Motherfucker. He’s back. #Dexter pic.twitter.com/EDXov06rot — Dexter on Showtime…