MacRumors has some details of the recently rumored iTunes 9's Social Media Integration features. I'm not sure if I want more cruft in my iTunes though. Version 8's big new feature, Genius, seemed more about selling you new music than anything, but I do enjoy being able to create a playlist of similar music when I'm listening to something I'm really in the mood for with one click. I'm thinking that while it seems like a small thing, it'll start being a given for future media player systems.
I'm looking forward to see what apple pulls out. I'm wondering if version 9 will also tie into new hardware somehow.