Koroma, Kanuch, and Norman are all seniors.
I also am hearing great things about Empey, although I don't know how much time he'll get as a freshman. Shoaf is also really good but was undersized last year. There are conflicting reports that he has gained the weight needed to get more leverage.
By the end of the year, it wouldn't surprise me to see Utah's OL be better. But to start the year, especially after BYU has two games under its belt (one against LSU), I expect BYU's OL to be better. Utah's OL may not have to be better, though, since it's going up against what will likely be a good, but not Utah-level, DL.