Uh, while I'm not a member of the RPGA, I do have a subscripton to Dungeon and have yet to receive mine. Unless what your speaking of is some sort of special-RPGA member-only-edition I would expect to see it soon...
I think... Has been that long since I got my last one???
All I know is the last Dungeon I got in the mail was the one with the Devourer on the cover.