It looks like I remembered about the June 2011 volume of Megami Magazine just before the month ends. This volume came out in the midst of the Spring anime season, so if you’ve enjoyed the anime recently and want some posters, you might want to consider ordering. The cover features the Shana clone, Aria, from Hidan no Aria. I thought it was great how they used bullet holes to feature some other characters.
The posters you’ll find in this volume are shown below. As usual, ecchi content isn’t directly shown on this page, click the links if you want to see them.