We are now running on the latest version of vBulletin.
There aren't any "wow" features, but there a a couple of new things.
The primary one is profile pages are now organised differently and have a tab-based structure.
The other one is that you can now link to your friends, and Facebook-style you can keep a list of friends which is viewable on your profile page.
There is also a tags feature, so you can define what your topic is about. I'm not too convinced by this feature, but it's here for now.
Please let me know in QSF if anything is broken or if you have any questions.