Hey lookee what I found! Anyways, I think that Way of Kings will have a guy who just 'happens' to stumble onto a shard sword (mystical shard-powered things) and he will struggle what to do with it. Does he try to take power with it , because he's a good person and would rule better? Or does he give it to someone else who he feels is more 'worthy' to have it? Or does he not take power because he feels it would corrupt him?
Any who, I think that we will also have a fairly scholarly figure, since Brandon seems to like them (Sazed, Elend, Raoden, Vasher?). I also think he will have a fairly strong female leader, but not another Vin. I think that part of the magic, as some people seem to already know (curse you Dragonsteel!), Will be the ability to change from the Physical to the Cognitive, and maybe even to the Spiritual? I doubt that last one, or it will be such a rare (or impossible) occurance that it is a huge deal when a character gets it.