[Wayne Luke]

Originally Posted by Lizard King

vBulletin 4.0 will not be a rewrite of the whole system. It has just some improvements but the core will not be updated. Most important factor for me is not complete. I am highly dissapointed with the annoucement.

That isn't what the announcement says at all. The core of vBulletin 4.0 will be rewritten but it will be refactored in steps instead of in one interation. What will be released in the Spring will have several core pieces of the backend refactored. Much of the backend is already in an an object oriented approach.

The plus side of this is that Addon Authors can progress their products at the same time and more of the current addons will continue to work after the release. Though its doubtful any style modifications or styles will continue to work.