Hmm me neither. Just noticed too that there are Spears in the list, which I at first assumed was just Polearms, but those are mentioned seperately. I also see Wands on the list, but we knew about them from Blizzcon.
So Spears and Exotics might be new weapon classes. Best guess I can think of is that this has to do with the Monk class in some way. HMM so many mysteries with this Beta. Gotta love it