The most interesting new feature is the "tags" feature. You can label your posts with keywords and you're also able to search for tagged posts:
Only at the first post by the thread starter can thread tags be added by regular members.
When a member creates a new thread, they can input a series of "tags" which are keywords that describe the thread.
Subsiquent posters cannot add them in the same thread.

Some tag words will likely be automatically censored.
Moderators can remove inappropriate tag words or create additional useful tags for a thread.