Simple, fairly boring chassis, like the wizard. Not a big surprise. The complexity is going to be tied to the sorcerous origin, so I can't judge this one too much without seeing those.
Bloodlines need to be an area where the design team gets creative, stat, if the PHB offerings are fairly vanilla. A lot of people are very attached to the sorcerer concept, and if it's Cha-wizard with no spell book like in 3e, there's going to be some unhappiness. I, personally, will be very disappointed if the hulk-out sorcerer from the playtest isn't an option that's presented within the first year of release.