I would imagine we'll use a FB when the situation calls for it. I doubt we'll be back to the Power-I anytime soon, but these guys have their uses.
With ZLee's wheels, I wouldn't be surprised to see quite a bit of Triple Option this year. Every time those FBs got a carry it was a sight to behold, as they either broke into the clear for 10+ yards or they dragged along a few defenders before finally going down.
Maybe triple option every once in a while, but I wouldn't expect to see it much. Considering the depth at QB - and most likely not wanting to burn Green's redshirt - I would expect that the coaching staff would try to minimize the hits Lee takes.
That said, I do believe they will utilize a variation of a zone-read option including Reed/Mendoza in the mix as perhaps an H-back type position (somewhat similar to how Harvin was utilized at Florida).
Just a guess based on what I have seen, but I expect to see a pretty similar offense to what we ran last year with slight variations based on our new players at the WR/TE and QB positions.