"FYI for folks in New England, some of the Newbury Comics locations do indeed have the posters. E.G. the Natick location still has about 10 or 12 posters left and they are rolled, not folded. In fact when I got mine there they gave me 2 extra posters because a couple previous purchasers didn't want them. If anybody wants them I'm happy to mail them for the price of the postage."
Update: "Stopped by the Nashua, NH location today. Out of CDs (was told that they're getting another shipment within the next few days), but they gave me a poster. Didn't see how many were left, but they're there." (Thanks Jocelyn)