Alex and Ani have a very active Facebook page and monitor it everyday. They mentioned (with a photo) of the up and coming Disney bangles (not the DVC member one) before they even hit the parks. I'd follow them and let them know that you are looking for those sold out items. I know that it's Disney that needs to place the order to make it happen but mentioning it on FB could not hurt.
GOOD idea!! I do follow their Facebook page, so that may have been where I saw them initially. Thanks, Joan