Considering I'm using Drupal for the backend of my site, I've been keeping up with all the latest modules, themes and news. Drupal 5.0 RC1 came out today, and I made the update. I love the multi-site system that Drupal has setup. When I update my site, about three other sites are also updated seamlessly. Well done, Drupal, keep up the great work!
I've just updated the site to Drupal 4.7. Some new features are AJAX, hiding content, etc. There have been a lot of issues that were introduced from this though, but I'm working on it. I'll have everything sorted out sooner or later.