As for "The Hobbit" MGM holds the distribution rights to the film and New Line owns the rights to make the film into a movie. MGM is now for sale and it's up in the air between Sony and Warner Brothers as to who gets the company and its film library. If Warner gets it we might see "The Hobbit" sooner than thought.
I'm keeping my figures crossed that Warner gets it. The old cartoon version isn't good at all.