The list for the Best Animated Feature Oscar nominations seems pretty set in stone at this point. Disney isn't putting any more out this year. Pixar is garaunteed a spot, I think, and will be pretty much every year from now on. The spots seem to me like they will be (if there are only 3):
The Polar Express
I guess the alternates will be: Shrek 2, and Ghost in the Shell 2: Innocence. The ones that have already come out: Clifford's Big Movie, Teacher's Pet, and Home on the Range seem unlikely, at least to me.