A major release to vBulletin that was originally due to be released in Q2 of 2009 is now looking like late 2009. Alpha testing is coming up probably in August, which is privately tested in a private environment. Beta testing will follow with a private testers' bed using public sites, some possibly production sites.
http://www.vbulletin.com/forum/showthre ... ost1767786For those who don't know, vBulletin 4.0 will result in an entire backend rewrite but instead of an entire new set of features being released at once, vBulletin has decided to increment the release of the new features into several version releases.