We have only briefly gotten in minor tizzes over the rumored changes to come. Nothing heated like the "Do Balrogs have wings?" or Tom Bombadil stuff. I guess we don't know enough yet, except about the vague rumor that the scouring of the Shire is either different or eliminated, and we really can't argue about that very well until next year!
Ready?....Saruman DIES in the Two Towers. Yes, thats right, at the end of the movie Christopher Lee aka Saruman of Many Colors meets his doom. During a scene where Saruman, Wormtongue and the Fellowship encouter Saruman in the newly flooded surroundings of his sprawling Isengard fortress ( as seen in FOTR ), Wormtongue pushes Saruman. He falls, straight onto a large spikey wheel ( seens briefly during a fly past in FOTR ). A link to the an image of this scene can be found here: www.theonering.net/movie/scrapbook/large/526 . As Saruman turns on the wheel, the Palantir drops from his hand and into the water...
And yes, you guessed it, The Scouring of the Shire is NOT going to be in Return of the King in any way, shape or form whatsoever. Peter Jackson said just that a few months back in New York during a press conference at a book store.
Spoiler over!