in the pathfinder playtest beta releas pdf pp 42 to 47 it describes different heritages that a scercerer can choose from: Abberrent, Abysmal, Arcane, Celetilal, Destined, Draconic (and subtype is chosed as well), Elemental, Fey, Infernal and Undead. then each gets cirtain posers and abilities as they advance in level.
For example, my monk 2 scorcerer 4 (human)
draconic bloodline (bronze)
natral claw attacks ( i think they stack with monk attack. not sure off the top of my head)
Draconic resistance bassed on dragon type (5/elecricity) and it improves with level
eventually he could have:
natural armor bonus that improves with level
Breath weapon based on dragon type and improves with level
wings, immunities and blindsense
when you add draconic feats on top of that, WOOOW!
i personally have been wanting to play an elemental (earth) scorcerer...but it wont be for a bit.
Oh, and there are bonus spells and bonus feats and in pathfinder you choose the cantruips he can cast,but in pathfinder you cast cantrips (and orisons) at will. there are some restrictions though.