I have never heard of such a distinction. Either Porter is silly enough to add another level or someone is just being a prick.
This is false. What it seems to have happened (this is based on inference from the posts here) is that Porter has recognized its best customers, those who have spent a over certain of threshold during the year the and given them a shot before the founding members. In fact, i've seen no evidence this year that founding members will be recognized with sale access before the general public.