Sherlock Holmes 2 is officially in development, with Brad Pitt added to the cast as bad dude Moriarty. There had been rumours for some time that Pitt appears as the professor in the first film, which is released at Christmas, but nothing was confirmed. Now the Robert Downey Jr. starring action film, which has been building big buzz, is having a sequel fast-tracked by Warner Bros, who did something similar with The Hangover before it was released earlier this year. Guy Ritchie is apparently returning to helm again, which is obviously a good sign that the suits are happy with what he’s done with the first one.