I just heavily edited the Thaumcraft 4 page (http://ftbwiki.org/Thaumcraft_4)
I removed all the Thaumcraft 3 info, linked to the Thaum 4 MCF page, added the Thaumonomicon categories, and the seperate things in each category.
I will try to add as much as I can to the actual things tomorrow
Editing wiki pages is surprisingly addictive!