Spies could be the 2011 revelation -- we already know what the others can do and expect it, he's the one who might surprise everybody with another leap forward.
Yes i think all the top riders will be keeping a close eye on Spies from now on, he is going in the right direction. But on the other hand, Spies has never been the type to take 'leaps forward'. His progress always seems fairly steady and gentle once he arrives in a class, he seems to be patient and methodical and not prone to brainwaves or inspirational changes in form.