I am quite looking forward to the fourth Inheritance book as well! It's been so long, I don't even remember anything, guess I'll have to re-read the first three again -.-
Lately I have been reading "The Eyes of God" by John Marco. It's a pretty epic book, and I'm thoroughly enjoying it.
Have you ever read "The Amulet of Samarkand"? I think you would like it if you liked Eragon.