According to this morning’s ‘Dominion’ newspaper, Liv Tyler (Arwen), Cate Blanchett (Galadriel) and Elijah Wood (Frodo) are returning in the next few months because some of their lines need to be re-recorded. Spokesman Melissa Booths said, “automated dialogue replacement was needed when background noise intruded on an actor’s lines.”

Thanks to Tiggy for that tip.