The ECB give so little of a shit about it (format we're world champions in - good work, marketing bods!) that I doubt there'll be any fanfare. It's not even on TV FFS, despite some hundred group games being deemed important enough to be broadcast live across five channels simultaneously.
It'll be up to us as fans to make it the occasion it should be. People rave on about Lord's finals but it's an absolute blessing that this is just up the road from us.