I was wondering if anyone has any insight on this? As far as I'm aware, The White Council did attack Dol Guldur, But will Saruman be leading this attack and do you think he'll have quite a big role in this storyline? Will there be any signs shown of Saruman searching for the ring? and will there be any signs of Saruman taking interest in his enemies Machines? (Aka, Wanting to Industrialize Isengard?)
To me, I believe The Lord of the Rings simply could not have functioned how well it did without Saruman, I've always had a great interest in this character and it would be due and respectful to only have him as quite a large part/role in the upcoming Dol Guldur battle.