May, 2010 edition (with the truly awful shirt on the cover) is at Barnes and Noble in Exton, PA.
Or, at least, two copies were, two days ago. A survey, over the past few months, of Barnes and Noble and Borders stores in several area states revealed that this B&N appears to be the only such store carrying BurdaStyle. Get ’em while they’re hot. Or available, whichever.