I remember a thread last week about Blacksite shipping in November but the PS3 version was going to be gimped down with no multi-player or co-op...
Well, good news sort of...
They are delaying the PS3 version but not saying anything about multi-player / co-op. Hopefully they are working on it.
http://www.eurogamer.net/article.php?article_id=85972
At least they are not saying it won't be in the final release.