I think we're waiting for the RXB to have a Janurary meeting to appove a schedule of National Challenge events. My guess would be that so long as we (the regions) don't conflict with the new National Challenge guidelines that they'll approve any requests they get. Namely I think they only want to see one NC per division from now on, and will frown on nearby weekend competing events.
I've 'named' my National Challenge weekend and am going forward with advertising it, but have yet to get an 'approval'.
Jay W