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?