What have we learned about the upcoming CMS?
 

The Vbulletin4 announcement discussion has become impossible to follow due to length and multitude of topics within the thread. As far as I know, no general overview of the upcoming CMS has been given at this time. I'm wondering if the following points have at some point been deiscussed related to Vbulletin 4 and the CMS:

1. Cross content search has been announced (excellent) - but does this mean the tag system will also work for all types of content (blogs, photos etc)?
2. In Vbulletin 4, will we be able to define categories that show up in new thread forms so that we can categorize threads as well as tag them?

I'm really hoping that the new system and CMS will incorporate these two fundamentally important features so that we can finally have a taxonomy system that will begin to rival Drupals. Has anyone seen word on these features?

Any other insights as to what this mysterious "CMS" will look like as a product?