Most of the good spoiler pix come from
MilleniumFalcon.com. Some of those look like they're from the C3 Spectacular footage, though they're too clean probably. I heard they actually have the whole Spectacular clip up over there too. Good stuff. Mind blowing visuals, and just like JJ said, total sensory overload in nearly every shot...
After seeing that footage, I'm really starting to dig Grievous. Up 'til now, I thought he was gonna suck. But he's looking pretty badass now, I'll admit. ****, can't wait!