At least I don't need to hit 10,000 posts now to become an enthusiastAnnounced this evening in the Community Announcements forum.
This “banner” appears on members who have a GOLD membership. Essentially it notes that these members are supporting the site financially and is part of an ‘enhancement’ of GOLD membership privileges. More to come!
It does replace the field normally used for user ranks based on posts, but you can see your level in your profile still.
Well, I do - but it's more hidden away now