Aaah! Thank you for the link to the Castle pic and the trailer (which I will watch as soon as I get home). Like you, I knew it was coming but I hadn't seen any of this yet.
Diana Wynne Jones is one of my favourite authors too, and Howl's Moving Castle is surely one of her best. And I love everything Miyazaki has ever done. All I wonder now is how he will get his trademark flying things in there. *g*