Sir Ian Answers Questions - McKellen's Official Site updates
A: There will be changes to costume and general appearance and awareness that Gandalf the White is younger-looking than his earlier incarnation. Otherwise we shall both have to wait and see. With 10 months filming ahead, I am absorbed still with Gandalf the Grey.
Q: Are there any scenes from the books that you are specifically looking forward to flexing your acting abilities in?
A: I was most looking forward to Gandalf's arrival in Hobbiton for the long-expected party -- food, fireworks and a pipeful of Longbottom Leaf. A wonderful chance to show Gandalf's crucial fascination with the Hobbit world. Otherwise the face-off with the Balrog should be exciting, although I expect it will involve camera trickery more than physicality from me.