Bug fixes to the latest release. They moved fairly quickly from the 3.5 release to the 3.6 level. I’ve still got several sites down at the 3.0.x level. (For those unfamiliar, vBulletin is my favorite forum/discussion software. I’ve integrated it into many sites…like http://www.reel-time.com )
None of my sites are at 3.6 – although I have an install coming up that will no doubt use the latest greatest (certainly if I have any say). Is anyone running vBull at that level now?