IGN have posted a huge preview on San Fierro after a long absense of any new information. It contains a whole load of new info and lots of new screenshots so check it out.
Links: Welcome to San Fierro, Screenshots
Well, the review wasn't all that extensive, but I still enjoyed reading it, and it had some cool screenshots, although only 4 i believe were new.
well they were kinda new screenshots, we had only seen them as scanned images before, so on monday or whenever we will have the proper unwatermarked ones from R*