I don't usually get too excited about an iTunes update, but Boy Genius Report has some possible screenshots of iTunes 9, and they imply Facebook and Twitter integration.Social networking integration and built-in Last FM were already rumored features, and the questionable shots show a "Social" tab.
What could a social networking aspect mean for iTunes? It could mean a way to combine your different social networks, or share music socially. I would love for them to expand on the Shared Playlist aspect, already something I enjoy and use now.
What do you think it could mean?