I KNOW we'll get something on Sandman at Comic-Con. We have to...they can't just show us a picture of him in 2005, say or show anothing about him in 2006, and release the movie in 2007. Well, technically they can, but you know what I mean. I see the Comic-Con Spidey 3 session going something like this...
1)Official confirmation of THC/Sandman, JF/GG2, and TG/Venom. The 4th villain hopefully will also be revealed.
2)Official movie poster for S-M3, along with possibly a Sandman poster. (as he is the main nemesis of this picture)
3) (if not yet released with SR) The release date of the teaser trailer, or (if the teaser iswith SR) the announcement of a new trailer probably with Ghost Rider..in Feb.
4)(Hopefully) Photos galore!!!! (Not from the set, from actual completed scenes of the movie.)
I expect Comic-Con for S-M3 to be something like that.