Board Thread:Support Requests - Community Management/@comment-19368-20130302221258/@comment-168424-20130304235350

The new forums (Special:Forum) don't technically have categories, but what they call Topics. I don't like how they work, because they have strange dependencies and limitations with pretty much no documentation, but they're better than nothing.

For the Community Central forums, you have to request new Topics at Suggestions for additional Support Forum topics, because of one of the limitations (new topics need to have an article associated with them or something).