YES !!! I saw it at the Warner Bros Harry Potter web site; you can only watch it if you introduce in the computer the DVD of any of the other movies and after that you search the web site. There are two trailers that I saw in spanish ( I'm spanish) although one is actually from South América ( they speak spanish, but the accent is quite different).
I loved them and watch them almost everyday !!!! First time I saw them, the music made me cry !!
They are REALLY AMAZING !!!! Don't loose them at "harrypotter.warnerbros.es/gobletoffire/" if you don't care watching them in spanish...